SYSTEM AND METHODS FOR MULTI-PURPOSE WATER-ACTIVATED INFLATABLE COLLAR DEPLOYMENT

Description

REFERENCE TO RELATED APPLICATIONS

This application claims priority from United States provisional application Ser. No. 63/731,423, filed May 2, 2024, which is incorporated by reference.

FIELD OF THE INVENTION

The present disclosure generally relates to water rescue and flotation systems, and more particularly, to portable flotation devices and related methods used during emergency rescue operations.

BACKGROUND

Existing rescue and flotation devices can be cumbersome to deploy or require manual activation under high-stress conditions, resulting in delayed assistance to individuals in distress. Additionally, many traditional systems lack adequate integration of rescue lines or towing elements, which complicates victim retrieval. Bulky storage requirements and limited adaptability during variable or harsh water conditions further hamper current water rescue technologies, often making them impractical or less effective in rapidly evolving emergencies.

SUMMARY OF THE INVENTION

In general, in a first aspect, the technologies described herein relate to a multi-purpose water rescue system that includes an inflatable rescue collar capable of housing a high-strength Webbing within a longitudinal channel, such that any tensile load is carried by the Webbing and not by the inflatable portion of the collar. A buckle-as-slide (BAS) assembly permits the collar to be detached from a wearer, repositioned, and recoupled around the torso without removing the Webbing. The system further includes a Water-Activated Inflator and a manual inflation mechanism to automatically or manually provide buoyancy upon contact with water, alongside a deployment bag with multiple compartments that maintain a rescue rope tethered to the Webbing even when the compartments separate.

In general, in a second aspect, the technologies described herein relate to a method of deploying a multi-purpose water rescue system. The method involves storing the inflatable collar, the Webbing, and the rescue rope in a segmented deployment bag, automatically inflating the collar upon water exposure, freeing the collar for quick access, and then cinching it around a victim or user. The rope remains continuously connected to the collar so that rescuers can pull the wearer to safety, and an oral inflation tube allows pressure adjustments as needed.

In general, in a third aspect, the technologies described herein relate to an inflatable water rescue collar apparatus that includes a tubular body with a channel for the high-strength Webbing, a buckle-as-slide (BAS) assembly for securing the collar around a person in a cinched arrangement, and a Water-Activated Inflator integrated with an optional Oral Tube for incremental or backup inflation. This apparatus helps isolate tensile loads from the inflatable section while ensuring rapid deployment in water emergencies.

In one scenario, a wildlife conservation officer may use the device to rescue a person who has fallen through ice on a lake. The officer can separate the two compartments, throw the collar bag to the victim, and use a rope to pull the victim to safety after the collar automatically inflates upon water contact.

In another scenario, the device may be used in conjunction with a drone for river rescues. The collar can be attached to a drone via an O-ring on a throw handle and delivered to a victim stranded on rocks in the middle of a river. After inflation, the victim can don the collar and be guided to safety using a tethered rope.

The device also allows for waterborne rescuer operations. A rescuer can swim to a victim while wearing the inflated collar over their shoulder. Using a buckle-as-slide (BAS) assembly, the rescuer can quickly secure the collar around the victim's chest, allowing for efficient retrieval by an onshore team member.

Embodiments of the invention may include one or more of the following features. These features may be used singly, or in combination with each other. In certain embodiments, the longitudinal channel incorporates a series of interior belt-loop structures that prevent the high-strength Webbing from rotating under heavy lifting forces. A Water-Activated Inflator may automatically inflate the collar upon submersion, or within seconds of exposure to water. The buckle-as-slide (BAS) assembly may be corrosion-resistant and able to withstand significant tensile loads (e.g., at least 2,000 pounds) while allowing incremental tightening around the torso. The rescue collar exterior may include Reflective Tape for improved visibility and may be formed of polymer-coated fabric with an Over-Pressure Valve to vent excess internal pressure above a threshold, sometimes aided by an Elastic Strip that helps retain a compact, coiled state before use. The deployment bag can include a drone attachment ring, a throw handle, and a specialized exit aperture that prevents tangling of the rescue rope during deployment; in some embodiments, the second bag compartment can be detached while preserving rope communication to extend rescue reach.

In one scenario, a wildlife conservation officer may use the device to rescue a person who has fallen through ice on a lake. The officer can separate the two compartments, throw the collar bag to the victim, and use a rope to pull the victim to safety after the collar automatically inflates upon water contact.

In another scenario, the device may be used in conjunction with a drone for river rescues. The collar can be attached to a drone via an O-ring on a throw handle and delivered to a victim stranded on rocks in the middle of a river. After inflation, the victim can don the collar and be guided to safety using a tethered rope.

The device also allows for waterborne rescuer operations. A rescuer can swim to a victim while wearing the inflated collar over their shoulder. Using a buckle-as-slide (BAS) assembly, the rescuer can quickly secure the collar around the victim's chest, allowing for efficient retrieval by an onshore team member.

The collar may feature foldable sections that snap or tab together to reduce overall volume. A protective jacket of ripstop nylon or a polyurethane-coated material can further guard against abrasion and allow quick repairs. Additionally, certain embodiments may employ a stainless steel O-ring near the buckle for secondary tether points, or tacky Webbing segments on the exterior of the inflatable collar to enhance stability in turbulent conditions. Other features and advantages of the present invention will become apparent from the following more detailed description, taken in conjunction with the accompanying drawings, which illustrate, by way of example, the principles of the invention.

DESCRIPTION OF THE DRAWINGS

FIG. 1 depicts a deployment bag, as shown in some embodiments;

FIG. 2 illustrates an exploded, perspective arrangement of an inflatable rescue collar, according to various examples;

FIG. 3 depicts an upright deployment bag divided into two compartments, as shown in some embodiments;

FIG. 4 illustrates an inflatable rescue collar with an inner and outer wall forming an inflatable cavity, as shown in some embodiments;

FIG. 5 depicts a cross-sectional view of a two-compartment deployment bag, as shown in some embodiments;

FIG. 6 illustrates an inflatable rescue collar, as shown in some embodiments;

FIG. 7 depicts an inflatable rescue collar incorporating an Over-Pressure Valve, a BAS assembly attached to high-strength Webbing, and a float element for added safety, according to various examples;

FIG. 8 illustrates a close-up view of a Buckle-as-Slide (BAS) assembly, as shown in some embodiments;

FIG. 9 depicts a disassembled BAS assembly, as shown in some embodiments;

FIG. 10 illustrates a detachable two-compartment deployment bag, as shown in some embodiments;

FIG. 11 depicts a Second Compartment with a rope exit point designed to guide the coiled rope outward without tangling, as shown in some embodiments;

FIG. 12 illustrates a side portion of the inflatable rescue collar, as shown in some embodiments;

FIG. 13 depicts a tall segment of the inflatable rescue collar with a manual inflation handle and a D-Ring Link Connection, as shown in some embodiments;

FIG. 14 illustrates a container with four Mesh Flaps folding outward around a central portion, as shown in some embodiments; and

FIG. 15 depicts Mesh Flaps arranged across a Second Compartment's surface to promote ventilation and moisture drainage, as shown in some embodiments.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT

Systems and techniques described herein may be used to overcome the limitations of traditional methods for deploying flotation equipment in aquatic environments. Existing approaches often rely on bulky devices that must be manually inflated, resulting in potential delays when individuals face urgent rescue needs. Conventional solutions sometimes impose significant stress on inflatable sections, which may prematurely rupture or lose structural stability under high tensile forces. Devices lacking integrated compartments for rescue lines can also hamper efficient retrieval or towing procedures.

To address these issues, the present disclosure provides a system that may integrate an inflatable collar with an independently supported Webbing channel, a buckle mechanism for rapid donning or re-buckling, and a packaging assembly that may include a specialized bag for storing both the deflated collar and a rescue rope. The subject matter described herein may incorporate water-activated inflation, manual triggering options, and compartmentalized storage to enhance responsiveness to submersion while minimizing strain on inflatable structures.

An example technique may include an arrangement where a tubular inflatable body may define a passage suitable for routing a high-strength Webbing without imparting tension to the inflatable cavity. The Webbing may be coupled to a buckle-as-slide assembly that may enable uncoupling from a torso and reattachment in a cinched state. A Water-Activated Inflator and a manual inflation control may be included to provide buoyancy upon contact with water, and the system may further incorporate a deployment bag separated into multiple compartments, each dimensioned to house the collar or a rescue rope while preserving rope connectivity during partial detachment.

Consider a scenario in which wildlife conservation volunteers arrive at a flooded wetland to relocate endangered birds. A volunteer may slip the deflated collar from the bag, and the Water-Activated Inflator may trigger when submerged, ensuring rapid inflation if the volunteer unexpectedly falls into deep water. The individual may then buckle the inflated collar around the torso and use the rescue rope to navigate to safety or to secure equipment. The system may support efficient transit through mud, shallow waters, or areas with sudden drop-offs, potentially reducing strain on the inflatable body by shifting tensile loads to the internal Webbing, while the second bag compartment remains tethered for extended reach or retrieval efforts.

Illustrative embodiments of the invention are described below. The following explanation provides specific details for a thorough understanding of and enabling description for these embodiments. One skilled in the art will understand that the invention may be practiced without such details. In other examples, well-known structures and functions have not been shown or described in detail to avoid unnecessarily obscuring the description of the embodiments.

Unless the context clearly requires otherwise, throughout the description and the claims, the words “comprise,” “comprising,” and the like are to be construed in an inclusive sense as opposed to an exclusive or exhaustive sense; that is to say, in the sense of “including, but not limited to.” Words using the singular or plural number also include the plural or singular number respectively. In other examples, the words “herein,” “above,” “below” and words of similar import, when used in this application, shall refer to this application as a whole and not to any particular portions of this application. When the claims use the word “or” in reference to a list of two or more items, that word covers all of the following interpretations of the word: any of the items in the list, all of the items in the list and any combination of the items in the list. When the word “each” is used to refer to an element that was previously introduced as being at least one in number, the word “each” does not necessarily imply a plurality of the elements, but may also mean a singular element.

FIG. 1 depicts a deployment bag 340, as shown in some embodiments. The illustrated container is shown in an upright, closed orientation and may be dimensioned to stow an inflatable rescue collar 220 in a folded, deflated state while simultaneously maintaining tethered communication with a rescue rope 230 stored either internally or in an adjacent compartment.

In certain aspects, the deployment bag 340 may include an arched, elongated handle 120 disposed proximate an upper rim. Handle 120 may span laterally across a top opening, forming a rigid or semi-rigid grip region that permits a single gloved hand to lift, swing, or manually throw the container toward a person in distress. In one implementation, handle 120 may be molded from a glass-fiber-reinforced nylon that balances durability, salt-water corrosion resistance, and low mass. Multiple transverse ribs molded into an upper surface of handle 120 may enhance tactile traction, while an interior concave underside may distribute load evenly across a rescuer's fingers. The handle 120 length, on the order of 5″-6″, aligns with the additional disclosure that opposing plastic buckle pieces located at distal ends of an inflatable tube may join to create a throw handle when the system is deployed without the bag 340, thereby allowing similar hand spacing for both bag-centric and collar-centric throws. In other aspects, handle 120 may serve as a drone-attachment bar, enabling a small unmanned aerial vehicle to engage and transport the package toward an overboard victim before automated release.

In many aspects, an upper drawstring-gathered region visible in FIG. 1 may define a first compartment 140 that is sized to house the inflatable rescue collar 220 in a deflated, accordion-folded configuration. First compartment 140 is shown closed by a circular fabric brim that may cinch via a cord lock positioned beneath handle 120. The surrounding fabric may be a lightweight ripstop nylon coated with polyurethane, thereby providing both abrasion resistance and a water-shedding surface while maintaining sufficient flexibility to deform during high-angle impact. In some embodiments, an interior liner of first compartment 140 may include a low-friction webbing guide that channels a high-strength webbing 720 strip through a longitudinal channel 440 of the stowed inflatable rescue collar 220, ensuring the webbing 720 remains untwisted and ready for immediate cinching once the collar 220 is removed from the container. The internal cavity of first compartment 140 may be deliberately oversized to accommodate an inflatable collar 220 whose tubular body 294 has been folded inward in an accordion pattern, an approach that minimizes wrinkling of the polymer-coated bladder surfaces and allows the collar's 220 snap tabs or elastic strip 250 to retain a compact coil.

In several aspects, a perforated compression band 110 circumscribes the outer periphery of the container at multiple vertically spaced locations. Each perforated compression band 110 may be fashioned from a polyolefin composite strap incorporating a honeycomb array of apertures that lighten the assembly, promote rapid drainage, and provide numerous anchor points for accessory hooks or carabiners. The band 110 may terminate at a high-efficiency side-release buckle 130 that is shown in FIG. 1 centrally along the forward face of the container. The perforations further allow a rescuer to visually inspect the tension state of the strap; if the band 110 is slack, the hexagonal pattern may sag inward, signaling the need for re-tightening. In other embodiments, perforated compression band 110 may integrate reflective yarns or retro-reflective dots to enhance night-time visibility, thereby supplementing reflective tape 280 placed directly on the inflatable collar 220.

In various aspects, buckle 130 may be fabricated from a marine-grade acetal or stainless-steel-reinforced polymer and may include an integrated slide path that permits incremental tightening of perforated compression band 110 without complete disengagement. A quick-release tab molded into buckle 130 may allow single-handed activation so that a rescuer can loosen the band 110, open first compartment 140, and access the inflatable rescue collar 220 within seconds. Buckle 130 may also serve as a mechanical coupler between an upper compartment containing the collar 220 and a lower compartment containing a rescue rope 230, although only the upper portion is visible in FIG. 1. By positioning buckle 130 midway along the height of the bag 340, tensile forces applied when throwing or hoisting the container may distribute across both compartments, helping to prevent zipper or seam failure.

In other aspects, perforated compression band 110 and buckle 130 may co-operate to compress the flexible sidewalls of first compartment 140 around the folded collar 220, thereby reducing bulk and assisting with the width specification that permits safe drone carriage or belt mounting. When the inflatable collar 220 is packed, the tube's edges may be folded inward, snapped, or lightly Velcro®-secured, following an accordion-style fold pattern that spaces stress along alternating hinge lines and avoids sharp creases that may compromise the polyurethane coating. Because the preferred nylon-or-polyurethane laminate exhibits limited long-term memory, the band's 110 radial compression ensures the collar 220 remains compact even after thermal cycling or vibration during transport.

In certain aspects, the lower-most region of the container, partially visible beneath perforated compression band 110, may house a semi-rigid cradle or skid plate that permits the container to land upright when tossed. While not expressly labeled in FIG. 1, the cradle may be injection-molded from the same material as handle 120 and may include drainage slots so that residual water can escape if the unit splashes down. This base element may additionally provide a flat attachment interface for mounting a detachable float 520 or foam puck, further enhancing buoyancy if the container remains in water after release.

In several aspects, the drawstring 310 that gathers first compartment 140 may feature a braced cord-lock molded from UV-stabilized nylon and sized to accept cold, wet gloves. The drawstring 310 length may be sufficient to allow the bag 340 to be opened wide, exposing the collar-interior, and may also double as a short sling for attaching small signal strobes or chem-lights. Once the drawstring 310 is loosened, a rescuer may grasp the inflatable collar's 220 internal BAS assembly 260, remove the collar 220 in a single pull, and simultaneously expose a rope aperture (not visible in this figure) so that the rescue rope 230 can pay out freely during deployment.

In many aspects, the deployment container of FIG. 1 may form a hybrid between traditional rope bag technology and inflatable collar technology. Because FIG. 1 focuses on the exterior of first compartment 140 and does not depict the internal rescue rope 230 or second compartment 242, the rope 230 may be understood to reside either beneath or beside the collar 220 in a hidden chamber that remains tethered to the collar's 220 high-strength webbing 720. Even when only the collar 220 is thrown—such as when rescuers wish to maximize distance for hypothermic, less-vigorous victims—the rope 230 may remain engaged with the internal high-strength webbing 720 via a through-channel, thereby allowing the line to be used for towing once the victim secures the collar 220.

In still other aspects, the combination of handle 120, perforated compression band 110, and buckle 130 may facilitate controlled separation of the package. For example, during an extended distance throw, a rescuer may grip handle 120, depress a release tab on buckle 130, and swing only first compartment 140-which contains the inflatable collar 220—toward the target. Because the rope 230 storage region (hidden in this view) is heavier, the free-flying collar 220 component may achieve nearly double the throw distance compared to the full assembly. Once the collar 220 enters water, a water-activated inflator 290 integrated into the collar 220 may fire automatically within seconds, providing immediate buoyancy without requiring victim dexterity.

In other aspects, the container materials may be selected with manufacturing scalability and field repair in mind. The cylindrical sidewall fabric of first compartment 140 may be laser-cut from continuous nylon sheeting coated on at least one side with polyurethane, enabling RF-welded seam formation that is both waterproof and abrasion resistant. Stitch lines attaching perforated compression band 110 may be bar-tacked at critical points to withstand dynamic loads when the rope experiences sudden shock during victim retrieval. Furthermore, handle 120 may be attached via a ladder-lock stitched to reinforced tabs on the bag rim, allowing replacement or upgrade by field personnel without specialized tools. In several implementations, the perforated architecture of compression band 110 may also enable a modular quick-attach buckle array, such that different loop-through accessories—e.g., a throw-weight pouch or a strobe light holster—may be woven into the honeycomb.

FIG. 2 illustrates an exploded, perspective arrangement of an inflatable rescue collar 220 that may cooperate with a two-compartment deployment bag 340 to form a multi-purpose water rescue system. The view emphasizes how a deflated collar 220, a tethered rope 230, and a dual-compartment container may remain continuously interconnected, thereby enabling rapid inflation, cinching, and towing without complex reassembly in the field.

In some aspects, the inflatable rescue collar 220 may define a generally U-shaped or horseshoe-shaped tubular body 294 fabricated from a woven nylon substrate that is internally or externally coated with polyurethane. The laminate may exhibit a hydrostatic-head resistance exceeding approximately 15 psi while maintaining flexural compliance suitable for accordion-style folding prior to stowage in a first compartment 140 of the deployment bag 340. Because the coating may be thermoplastic, radio-frequency welding or heat-sealing may be used to close axial seams, thereby creating an inflatable cavity 430 extending continuously between an inner wall 410 and an outer wall 420 of tubular body 294. In other implementations, the base textile may comprise a rip-stop polyester or aramid blend to improve cut resistance when the collar 220 contacts sharp marine objects.

In several aspects, a longitudinal region along tubular body 294 may incorporate a reflective tape 280 that is sewn, heat-bonded, or adhesively laminated to the exterior surface. Reflective tape 280 may include micro-prismatic elements or glass-bead retro-reflectors to enhance photometric intensity when illuminated by search-and-rescue spotlights. Placement along a high-visibility facet of tubular body 294 may help rescuers track the collar 220 in breaking surf or at night.

In various aspects, the collar's 220 inflatable cavity 430 may communicate with a water-activated inflator 290 mounted adjacent a removable CO₂ cartridge 292. Water-activated inflator 290 may employ a dissolvable bobbin element that releases a spring-biased piercing pin upon immersion, thereby puncturing CO₂ cartridge 292 and directing pressurized gas into tubular body 294. The inflator 290 assembly may be qualified to discharge within approximately three seconds of submersion, though other actuation delays may be specified to mitigate accidental inflation due to spray or rainfall. Housing geometry visible in FIG. 2 suggests a low-profile cylindrical inflator 290 that nests along the lower arm of the collar 220, enabling a folded width compatible with the 5″-6″ side dimension of the collar deployment bag 340.

In many aspects, an over-pressure valve 270 appears at an opposing end of tubular body 294. Over-pressure valve 270 may be spring-biased to open at roughly 3 psi, thereby venting excess gas that may result from thermal expansion or secondary manual topping. By positioning over-pressure valve 270 near a belt-loop region of the collar 220, internal pressure distribution may remain balanced even when high-strength webbing 720 (not explicitly shown in this view) is cinched tightly around a victim's torso.

In other aspects, FIG. 2 depicts the buckle-as-slide (BAS) assembly 260 spanning the inner open region of the collar 220. BAS assembly 260 may include a male tongue 920 and a female latch 910 configured to withstand tensile loads of at least 2 000 lb. while permitting incremental tightening of high-strength webbing 720 routed through corresponding slots. Because BAS assembly 260 is anchored exclusively to the webbing 720—rather than to the inflatable wall—the tubular body 294 may remain free of direct tensile stress during hoisting or dragging operations. This load-path separation may reduce risk of seam rupture under dynamic towing forces, thereby improving reliability when lifting hypothermic, less-vigorous victims from water to a boat deck.

In certain aspects, an oral tube 210 protrudes from one crown portion of tubular body 294. Oral tube 210 may include a one-way push-in valve allowing a rescuer to orally inflate or top-off pressure inside the collar 220 after initial automatic deployment. A knurled locking ring may rotate to vent or fully deflate the collar 220 for repackaging. Alternatively, oral tube 210 may connect to a latex bite-valve component suitable for cold-weather operation with diminished fine-motor dexterity.

In some aspects, an elastic strip 250 is shown coupled to an outer surface near the inflator 290 end. Elastic strip 250 may comprise a segment of woven elastomeric webbing stitched at opposing edges to create a tension band that contracts around a folded or rolled section of tubular body 294 before packing. By maintaining a compact coil, elastic strip 250 may ensure repeatable fit within first compartment 140 regardless of minor variations in user repacking technique. Alternative retention devices may include snap tabs, hook-and-loop patches, or a zip-sleeve that slides over the inflated tube when in storage. The elastic strip 250 may further serve as an attachment point for glowsticks or water-activated strobe lights (not shown), enhancing visibility during low-light rescue operations.

In several embodiments, a D-ring link connection 240 bridges rope 230 to BAS assembly 260 or to a proximate loop in the high-strength webbing 720. D-ring link connection 240 may be stainless steel or anodized aluminum, presenting a closed-loop geometry that distributes torsional loads and minimizes stress concentration at the stitched attachment eye. Rope 230, which may be a kernmantle or double-braid nylon between 8 mm and 11 mm in diameter, exits from D-ring link connection 240 toward a second compartment 242. Second compartment 242 is shown detached from first compartment 140 in FIG. 2, underscoring how the rope may remain continuously connected even after the collar is removed for an extended-distance throw. The rope may be stored loosely flaked or coiled inside second compartment 242 so that it can stream freely without snarling when a rescuer applies a throwing motion.

In other aspects, first compartment 140 appears as a relatively rigid sleeve or pouch that previously housed the collar 220 before removal. First compartment 140 may incorporate an internal liner to protect inflator 290 components and reflective film from abrasion, and may integrate snaps, Velcro® fasteners, or a zipper track along one longitudinal fold such that the compartment can re-close once the collar 220 is repacked. In certain implementations, first compartment 140 may further include a drone-engagement flap or throw-handle strap (not depicted in FIG. 2) positioned near its mouth, thereby allowing rescue personnel to sling or carabiner the pouch to a belt when patrolling a deck edge.

In several implementations, second compartment 242 may be fabricated from a mesh-reinforced vinyl-coated polyester to accelerate water drainage. The interior volume may be sized to accept a 50- to 75-foot length of rope 230 while still providing space for a small foam float 520 or ballast weight. A flared or funnel-shaped mouth (partially visible) may help ensure that rope 230 exits in an untwisted orientation as kinetic energy from the throw pulls the rope 230 from the bag 340. When the two compartments are releasably coupled—via snaps, hook-and-loop pads, or a perimeter zipper—second compartment 242 may nest below first compartment 140 in a coaxial alignment consistent with the cylindrical form shown earlier in FIG. 1.

In many aspects, the interface between first compartment 140 and second compartment 242 may be positioned to allow a rescuer to “aim” the rope 230 bag opening in the desired throw direction before detachment. Upon releasing snaps or a zipper pull, second compartment 242 may remain in the rescuer's hand while first compartment 140 and the collar 220 are thrown, or vice versa, depending on environmental constraints. This staged release may provide the benefit of nearly doubling throw length when only the lighter collar 220 is launched, as indicated in the supplemental disclosure.

In certain alternative embodiments, rope 230 may integrate retro-reflective tracer yarns, high-visibility dye, or a phosphorescent sheath to assist night-time location. Rope 230 further may terminate at a soft-eye splice looped around D-ring link connection 240 so that no rigid metal shackle is required; eliminating metal at this junction may mitigate injury risk if the collar 220 swings into a victim during high-sea states.

In several aspects, BAS assembly 260, oral tube 210, water-activated inflator 290, and over-pressure valve 270 collectively constitute an inflation assembly 450 capable of both automatic and manual activation, pressure regulation, and pressure adjustment. Under some conditions, such as frigid water rescue, a user may decide to pre-inflate the collar 220 via oral tube 210 prior to launch so that inflation time is virtually instantaneous upon contact. Alternatively, auto-inflation may be preferred when time is critical, allowing the water-activated inflator 290 to perform the main fill while the oral tube 210 merely fine-tunes buoyancy after collar 220 placement on a victim.

FIG. 3 depicts an upright view of the deployment bag divided into two compartments, as shown in some embodiments. The upper portion contains the Second Compartment housing the Rescue Rope 230, while the lower portion contains the First Compartment 140 housing the Inflatable Rescue Collar. This arrangement allows for quick access to both the rope and the collar during rescue operations. The drawing shows the bag 340 in a closed, ready-for-throw configuration sized to fall within an approximate five-to-six-inch square footprint, thereby satisfying the dimensional constraint useful for belt carry, drone carriage, or bulk storage in a deck-mounted locker. The depicted exterior fabric may be a woven nylon treated with a polyurethane or polyether urethane coating to achieve both water resistance and seam-weld compatibility, while still remaining pliable enough to compress around the stowed inflatable collar 220 and rope 230.

In certain aspects, first compartment 140 may define an internal volume dimensioned to house an accordion-folded inflatable rescue collar 220 in its deflated, compact state. The interior cavity may employ a slippery rip-stop lining to reduce chafe on reflective tape 280 and to facilitate smooth withdrawal when a rescuer tugs on the collar's 220 BAS assembly 260. A circumferential cuff at the top of first compartment 140 supports a series of mesh flaps 350 that are overlaid by corresponding Velcro strips 360. Each mesh flap 350 may be formed from a polyester knit having an open cell pattern that promotes both drainage and evaporative drying once the device is repacked after a training exercise. The mating Velcro strips 360 may allow each mesh panel to fold downward and releasably seal the collar 220 within the compartment, thereby eliminating loose draw-cords that may snag during an aerial drop.

In several implementations, manual inflation handle 320 protrudes laterally through a deliberately reinforced slit along the side wall of first compartment 140. Manual inflation handle 320 may couple directly to a lanyard that, when pulled, activates the manual side of a dual-function inflation assembly 450 mounted on the inflatable rescue collar 220. Positioning manual inflation handle 320 on the bag 340 exterior may permit a rescuer to pre-inflate the collar 220 without opening the compartment-an advantage when working on a pitching deck where loose components risk falling overboard. In alternative embodiments, manual inflation handle 320 may present a molded aperture sized to accept a drone grappling hook, thereby consolidating the manual-inflation pull feature and aerial lift point into one reinforced insert.

In many aspects, two symmetrically spaced buckles 130 encircle both sidewalls at the junction between first compartment 140 and second compartment 242. Each buckle 130 may clamp onto a high-tenacity webbing strap and include a ladder-lock slide path that permits incremental tensioning. By cinching buckles 130 tightly, a user may create a semi-rigid waist that clamps first compartment 140 closed while simultaneously compressing second compartment 242 upward, thereby ensuring that the rope 230 stored below does not shift during transport. Because buckles 130 are quick-release, the user may disengage them in less than one second, enabling rapid detachment of the compartments in scenarios where a longer throw distance is required by launching only the collar 220.

In other aspects, second compartment 242 may be configured to house a coiled rescue rope 230 that remains tethered to the high-strength webbing 720 of the inflatable collar 220 via an internal pass-through aperture (not visible in this figure). The lower portion of second compartment 242 may terminate in a skirt that is gathered by drawstring 310. Drawstring 310 may feature a high-contrast color and an oversized cord-lock so that it can be released with a gloved hand. When drawstring 310 is loosened, the skirt may flare, presenting a wide-mouth funnel that orients itself toward the throw direction, thereby minimizing friction as rope 230 pays out during deployment. Conversely, tightening drawstring 310 may convert the lower skirt into a snug closure, preventing loss of rope 230 during stowage.

In several implementations, deployment bag 340 may include an internal zipper, snap array, or strip of hook-and-loop fastener (not called out in the view) positioned between first compartment 140 and second compartment 242. Such joining technology may allow the compartments to be detached entirely while preserving the continuous rope 230 connection. For example, a rescuer positioned on a high pier may detach second compartment 242, keep the rope 230 coil at their feet, and toss only first compartment 140—and the collar 220 therein—toward a victim. This staged approach may nearly double throw distance relative to tossing the combined bag 340 mass.

In certain aspects, the outer skins of first compartment 140 and second compartment 242 may be sewn with bar-tack reinforcement at each webbing 720 strap exit to withstand cyclic tensile loads generated as a victim is hauled toward a boat deck. The peripheral seams may be taped internally with thermoplastic seam seal to ensure water does not wick into rope 230 storage cavities. Where mesh flaps 350 meet the main fabric body, an over-edge binding may be applied to minimize snagging on hatch combings or rescue gear.

In several embodiments, the top rim of first compartment 140 may include a thin semi-rigid polymer band laminated between fabric layers to retain a circular opening that resists collapse when the collar 220 is removed. This structural memory may aid repacking because it provides a clear target into which the folded collar 220 can be re-inserted. At the same time, mesh flaps 350 may hinge along the inside of that rim so that, when opened, the mesh lies flush against the compartment exterior, reducing the chance of accidental closure during the re-stuffing process.

In other aspects, deployment bag 340 may serve as an ergonomic link between inflatable collar technology and established rope-bag practice. The bag's 340 dual-compartment layout allows water-activated inflation hardware to remain physically separated from wet rope 230 until the moment of deployment, thereby mitigating corrosion risk to the inflator's 290 spring-loaded trigger. Because second compartment 242 is intended to become wet repeatedly, its lower half may be lined with a mildew-resistant PVC mesh laminate, whereas first compartment 140 may employ a breathable yet water-shedding polyurethane-coated nylon selected for lower weight and easy foldability.

In many aspects, the stacked configuration may also lend itself to intuitive use: the upper compartment is removed first, exposing the collar 220; the lower compartment remains held or secured, providing a controlled line-feed as the collar 220 is thrown. Buckles 130 act as both closure locks and haptic indicators—once both buckles 130 are depressed and straps loosen, a rescuer knows separation is permissible. Meanwhile, drawstring 310 may double as a visual reference of rope 230 orientation; if its tail points toward the intended throw vector, the bag 340 opening is correctly aimed.

In additional implementations, manual inflation handle 320 may incorporate a tactile pattern—such as raised ridges or a molded icon-to differentiate it from surrounding hardware. Such tactile coding may prevent accidental actuation of the inflator 290 during thermal-gloved operations. Furthermore, manual inflation handle 320 may be secured by a light-tension Velcro keeper tab so that it does not flail during rotor wash when the package is slung beneath a drone.

In yet other aspects, first compartment 140 may harbor internal guide sleeves that route the inflatable collar's 220 manual-inflation lanyard along a defined path toward manual inflation handle 320. This approach may prevent tangling with rope 230 strands stored below and may also position the lanyard so that the handle 320 always presents on the bag's 340 starboard side, supporting standardized muscle memory among rescue crews.

FIG. 4 illustrates an inflatable rescue collar 220 with an inner wall 410 and an outer wall 420 forming an inflatable cavity 430, as shown in some embodiments. In some aspects, FIG. 4 illustrates an overhead plan view of an inflatable rescue collar 220 configured in a generally horseshoe-like geometry and shown in a partially sectioned state to reveal internal structural relationships that support rapid self-inflation, tensile load isolation, and safe buoyancy control during water-rescue operations. The collar 220 may be fabricated from a nylon base cloth that is internally coated with a thermoplastic polyurethane (TPU) film, thereby yielding a flexible laminate that can be radio-frequency welded along panel seams while resisting hydrolysis and salt-water degradation.

In certain aspects, the collar 220 defines an inner wall 410 and an outer wall 420 that cooperatively shape a continuous inflatable cavity 430 extending around the U-shaped perimeter. Inner wall 410 may exhibit a concave curvature sized to nest comfortably against a wearer's neck, chest, or upper torso, whereas outer wall 420 may present a convex profile adapted to displace a greater water volume for buoyant lift. Both walls 410, 420 may be cut from identical die patterns but oriented in mirror symmetry prior to perimeter welding, thereby simplifying manufacturing tooling and reducing scrap.

In various aspects, inflatable cavity 430 may be divided by optional internal baffles (not shown) that maintain a balanced air distribution even when the collar 220 is folded or partially compressed by a victim's weight. The cavity 430 may be capable of holding approximately 45-60 N m of gas volume at a working pressure near 2.5 psi, which is sufficient to float an average adult while providing safety margin under wave impact. A translucent inspection window (also not visible in the selected view) may be integrated into outer wall 420 to permit quick visual confirmation of inflation status.

In several embodiments, a longitudinal channel 440 is indicated along the lateral straight section of the collar's 220 right arm. Longitudinal channel 440 may be formed by sewing or welding a flat-weave tunnel tape to the exterior of outer wall 420 such that the tape's free edge lines define a low-friction pathway for a high-strength webbing 720. The tape width may be chosen so that the webbing 720 slides freely yet cannot invert or roll, thereby ensuring that tensile loads applied during towing transmit through the webbing 720 rather than through the inflatable membrane. In other implementations, the channel 440 may be created by bonding a folded section of the TPU-coated fabric itself.

In certain embodiments, inflation assembly 450 is mounted along the bottom curved segment of the collar 220. Inflation assembly 450 may house a water-activated inflator 290 containing a dissolvable cellulose bobbin and a spring-loaded piercing pin matched to a 16-to 24-gram CO₂ cartridge 292 (cartridge body omitted in this sectional illustration). A molded saddle integrated into inflation assembly 450 may align the cartridge 292 barrel flush with outer wall 420, shortening the overall folded width of the collar 220 to meet a 5″-6″ deployment-bag 340 slot. When the inflator 290 senses submersion, the pin punctures the CO₂ cartridge 292, routing gas through a check valve into inflatable cavity 430. In some implementations the inflator 290 cap may further incorporate a pull-tab connected to manual inflation handle 320 shown previously, permitting user-initiated activation when rapid pre-inflation is desired.

Positioned along the upper interior arc of the inflatable collar 220, webbing handle 460 may be formed from a high-tenacity woven material such as nylon 6,6, polyester, or an aramid-reinforced webbing, each selected for its balance of flexibility, abrasion resistance, and tensile strength. The handle 460 may be sewn integrally into the high-strength webbing 720 channel and bar-tack stitched at both ends using bonded nylon or polyester thread to ensure long-term durability in marine environments. In some embodiments, the webbing handle 460 may support static tensile loads exceeding 1,200 lbf (approximately 5.3 kN), enabling it to serve as a reliable grab point for manual lifting, dragging, or aerial extraction. The flat-loop geometry of the handle 460 may also allow gloved rescuers to quickly grasp and control the collar 220 during donning or victim retrieval, without obstructing access to the BAS assembly 260 or interfering with collar 220 inflation.

In certain alternative embodiments, longitudinal channel 440 may incorporate discrete belt-loop structures sewn at four-to-six-inch intervals, each loop formed from abrasion-resistant hypalon and bar-tack stitched to the fabric shell. These belt loops may prevent rotational displacement of the high-strength webbing 720 under dynamic lifting forces generated, for example, when a lifter hoists a victim up a boarding ladder.

In yet other aspects, an optional reflective overlay or retro-reflective piping (not labeled in FIG. 4) may be applied along the seam where inner wall 410 meets outer wall 420, forming a 360-degree visual highlight that augments reflective tape 280 depicted elsewhere. Such continuous edging may simplify orientation for rescuers approaching at night, as the collar 220 opening will appear darker inside the reflective perimeter, indicating the location into which a victim's neck should be placed.

FIG. 5 depicts a cross-sectional view of a two-compartment deployment bag 340, as shown in some embodiments. In some aspects, FIG. 5 presents a sectional, front-elevation view of an opened deployment bag 340 showing an upper second compartment 242 hingedly separated from a lower first compartment 140 along a fold axis that may be reinforced by a throw handle and drone attachment space 530. The illustration reveals how rope 230, inflatable hardware, and load-bearing linkages can remain continuously interconnected even while the two compartments are physically parted for an extended-distance collar 220 throw.

In certain aspects, second compartment 242 houses rope 230 that is shown loosely serpentine-coiled in a horizontal layout. The coil occupies most of the visible cavity yet remains free to exit via an upper skirt gathered by a dual-tail drawstring 310. Each drawstring 310 tail may pass through a common drawstring slide 510 that permits one-handed cinching; when tension is released, drawstring 310 may open to a gaping mouth that aligns with the intended throw vector, thereby reducing friction on the first few meters of rope 230. In other embodiments, drawstring slide 510 may incorporate an acetal cam cleat to lock the cords in heavy sea states.

In several implementations, a small spherical or oblong float 520 is shown nested near the domed roof of second compartment 242. Float 520 may be molded from closed-cell EVA foam and may present a density of approximately 0.18 g/cm³ so that it exerts an upward bias on the rope 230 coil, encouraging buoyant orientation if the entire bag 340 lands in water. The float 520 may also serve as a tactile indicator for rescuers blindly inserting a hand into the compartment; if the float 520 is encountered first, the rescuer knows the rope 230 is paying out from the top and not from a buried under-layer.

In many aspects, the interior rim of second compartment 242 may be stitched to a perimeter bead that mates with complementary stitching on first compartment 140, the two being joined by throw handle and drone attachment space 530. Space 530 may be formed from doubled, TPU-coated webbing that provides both a compact gripping flange for manual hurling and a rigid lug that a drone claw or carabiner can seize. When the compartments are folded closed, space 530 may align precisely at the circumferential midplane, thereby acting as a hinge that guides the bag 340 to swing open consistently in a single plane and present its rope 230 exit point for controlled pay-out.

In other aspects, the lower first compartment 140 encloses an inflatable rescue collar 220 in its deflated accordion state, though only representative folds are shown schematically. Along the top of the collar 220 stack sits a D-ring link connection 240 and a portion of a high-strength webbing 720 strap that threads through and under the buckle-as-slide (BAS) assembly 260. The D-ring link connection 240 may remain tethered to rope 230 even when first compartment 140 is removed, thereby maintaining continuous rope 230 communication for towing or victim retrieval. BAS assembly 260 is depicted with its male tongue nested into the female latch; however, incremental slack may persist in the webbing 720 loop so that the collar 220 can be donned around a torso immediately upon extraction from the compartment.

In certain embodiments, a water-activated inflator 290 is displayed mounted along the bottom wall of first compartment 140. Inflator 290 may be pre-assembled to pierce a CO2 cartridge 292 upon full submersion or manual-lanyard pull. Positioning inflator 290 near the base of the stack may permit a rescuer to reach through a mesh drainage window and verify that the inflator's 290 arming indicator remains green prior to packing the bag 340. CO₂ cartridge 292 is shown seated in an in-line orientation such that its cylindrical axis is parallel to the stacked folds of the collar 220 bladder, yielding an overall flat profile that fits within the five-to-six-inch bag 340 dimension constraint.

In several aspects, the floor of first compartment 140 is vented by mesh flaps 350 that overlay Velcro strips 360. Mesh flaps 350 may be sewn from a high-tenacity polyester grid that allows water to egress after training evolutions. Velcro strips 360 may operate in a shear-load path, meaning that accidental peeling forces are minimized because the user must deliberately lift an edge tab to open the flap. When mesh flaps 350 are peeled away, the entire lower panel may hinge downward like a trapdoor, facilitating rapid drain-through of water and simplifying removal of sand or silt from the compartment interior.

In other aspects, each folded layer visible in the collar 220 stack within first compartment 140 may correspond to a single accordion panel of the inflatable tube. The tube edges may have been pre-folded inward along longitudinal creases and retained by light-duty snaps or tabs whose profile sits flush against the TPU surface, ensuring nobody catches on Velcro hooks during repacking. By conforming to these fold lines, the user may exploit the elasticity of the bladder fabric to spring-load the collar 220, such that it begins to unfurl on its own once BAS assembly 260 is removed.

In certain optional implementations, throw handle and drone attachment space 530 may incorporate metallic grommets sized to accept self-illuminating Cyalume™ sticks, low-power LED strobes, or a visual marker such as a glowstick or strobe to facilitate location and monitoring during a rescue mission. The lighting modules may snap into the grommets, providing directional indicators during night drops. Space 530 may also carry a universal low-profile QR code printed on a TPU overlay so that first responders can scan and retrieve digital instructions or register automatic AIS beacons.

In still other aspects, Velcro strips 360 may include high-vis Day-Glo orange loop material on the compartment exterior, enabling a rescuer to orient the bag 340 visually from a distance and identify which side opens toward the rope 230 mouth. Conversely, the hook material may remain on the inner surface of mesh flaps 350, ensuring that abrasive hooks do not abrade wetsuits or corrode in salt spray while in a stored state.

FIG. 6 illustrates an angular, generally V-shaped implementation of an inflatable rescue collar 220 configured for rapid self-inflation, cinch-tightening, and secure towing in demanding marine or swift-water environments. The collar 220 is shown in an open, ready position, having been withdrawn from a deployment bag 340 and allowed to expand toward its natural V geometry, which may facilitate hugging of a wearer's upper torso while leaving clearance beneath the chin. A series of discrete elements—namely oral tube 210, elastic strip 250, buckle-as-slide (BAS) assembly 260, over-pressure valve 270, water-activated inflator 290, manual inflation handle 320, and interior tacky webbing 610—are distributed along the tubular frame to provide inflation control, pressure regulation, load isolation, and anti-slip retention.

In certain aspects, water-activated inflator 290 is mounted near the apex of the left collar 220 arm. Inflator 290 may house a dissolvable bobbin that releases a spring-biased pin to puncture an internally threaded CO₂ cartridge 292 once full water immersion is detected. By locating inflator 290 adjacent the joint where the two collar 220 arms converge, the design may minimize any off-axis mass that may destabilize the collar 220 during deployment. The housing may be over-molded in a glass-reinforced polymer selected for chemical compatibility with TPU-coated nylon, allowing direct RF-weld attachment to the tubular wall. In some embodiments, the inflator 290 footprint may be less than approximately 1.3 in×2.0 in so that the collar 220, when accordion-folded, still meets a 5″-6″ deployment-bag 340 width specification.

In several implementations, manual inflation handle 320 is displayed slightly aft of inflator 290 on the same collar 220 arm. Handle 320 may connect to a lanyard routed through a sealed pass-through eyelet so that pulling the handle 320 activates the manual side of inflator 290. The handle 320 may be molded with an ergonomic, 0.25-in-deep scallop to ensure positive grip even with neoprene gloves. Because manual inflation handle 320 is placed close to inflator 290, a rescuer locating the handle 320 by feel may simultaneously confirm the inflator's 290 arming status by tactile inspection of a molded raised indicator.

In many aspects, elastic strip 250 is attached circumferentially around the collar 220 near the same region. Elastic strip 250 may consist of a two-inch-wide woven elastomer webbing whose relaxed length is slightly shorter than the local collar 220 circumference, thereby applying a gentle compressive preload that helps retain an accordion-folded state when the collar 220 is stowed. During inflation, the strip 250 stretches to accommodate expansion and then provides a mild clamping force that may aid in shaping the collar's 220 V profile around a wearer's shoulders. Alternative retention mechanisms—such as snap domes or removable tape—may be substituted for elastic strip 250.

In various aspects, BAS Assembly 260 spans the open interior of the V shape, linking the two arms by way of a single length of high-strength webbing that slides through the collar's longitudinal channel (not visible in this view). BAS assembly 260 appears with its male tongue nested into a female buckle housing, forming a low-profile connection capable of withstanding tensile loads of at least 2 000 lb. while permitting incremental cinching. The buckle's surfaces may be electropolished stainless steel or anodized aluminum to resist salt corrosion and to provide smooth feed paths that reduce webbing abrasion. Because the buckle is positioned near the distal end of the right arm—rather than exactly at the apex—the rescuers may cinch the collar asymmetrically to accommodate victims of differing chest girths, a feature that may be valuable when lifting hypothermic or pediatric casualties.

In some embodiments, tacky webbing 610 is adhered or stitched to the inner face of each collar 220 arm. Tacky webbing 610 may include a silicone-impregnated polyester braid or a thermoplastic polyurethane (TPU) film featuring micro-scale chevrons that provide bidirectional friction. The tacky surface may reduce rotational slip and rolling of the collar 220 when subjected to dynamic wave action or sudden hoist acceleration. Individual tacky pads may be spaced two to three inches apart to allow ambient water to drain between pads, minimizing unwanted hydroplaning of the collar 220 along a wetsuit or life jacket.

FIG. 7 depicts an inflatable rescue collar 220 incorporating an over-pressure valve 270, a BAS assembly 260 attached to high-strength webbing 720, and a float element for added safety, according to various examples. In some aspects, FIG. 7 depicts an angular inflatable rescue collar 220 arranged in an open, ready-for-donning orientation and connected to a partially detached portion of its deployment bag 340. The view emphasizes how load-bearing structures, buoyancy-control hardware, and user-interface features cooperate to create a cinchable, self-inflating flotation aid that remains continuously tethered to a rescue rope 230 even after the bag 340 halves separate.

In certain aspects, a buckle-as-slide (BAS) assembly 260 is shown bridging between the distal ends of two collar 220 arms. BAS assembly 260 may include a stainless-steel female latch paired with a corrosion-resistant tongue, each presenting opposing web-slot pathways sized to accept a continuous length of high-strength webbing 720. High-strength webbing 720 may be a 1-inch aramid-reinforced strap rated above 2 000 lbf and routed through an internal longitudinal channel 440 (hidden internally) so that tensile loads bypass any inflatable membrane. By tightening BAS assembly 260, rescuers may cinch the collar 220 around a victim's torso while leaving webbing 720 free to slide for incremental adjustment.

In many aspects, a fabric-covered module containing buckle 130 is visible left of BAS assembly 260. Buckle 130 may clamp two flaps of a rope-storage bag (not fully shown) that remains tethered to the collar 220 after compartment separation. The mesh pattern visible on the buckle housing may correspond to air-permeable panels that promote drainage. When the buckle 130 is released, the bag half may swing free yet remain attached to BAS assembly 260 via rope exit hardware, maintaining uninterrupted line control.

In several implementations, the O-ring 710 is located just above BAS assembly 260 along high-strength webbing 720. O-ring 710 may be a solid-bar stainless casting providing a secondary tether point for a helicopter hoist hook, drone grappling claw, or auxiliary leash. Placement at the inner apex of the V geometry may orient the O-ring 710 near the wearer's sternum, delivering balanced lift that minimizes collar 220 roll during vertical extraction.

In certain embodiments, an inflation assembly 450 is positioned at the right-arm terminus. Inflation assembly 450 may contain both a water-activated inflator 290 and a manual pull pin. The cylindrical inflator cap is oriented axially with the collar 220 arm to maintain a slim cross-section that folds easily inside a five-to-six-inch-wide deployment sleeve. An adjacent pull-tab (not individually numbered) may be tied into manual inflation handle 320 referenced earlier, giving rescuers the choice of dry-land pre-inflation if launch distance is short.

In many embodiments, high-strength webbing 720 exits BAS assembly 260 and loops rearward through the rope-bag hardware, after which the webbing 720 re-enters a concealed belt-loop network lining the inflatable cavity 430. These discreet belt loops, hidden in the dashed outline of the tubular shell, may prevent webbing 720 roll while permitting some axial movement so that cinch forces distribute evenly around the wearer's torso.

In alternative configurations, buckle 130 may be replaced with magnetic quick-disconnect clips that release under a specific peel direction yet resist straight tensile pulls, thereby reducing snag risk in cluttered deck environments. Similarly, tacky webbing 610 may be substituted with a polyurethane spray coating featuring randomized grit to create an omni-directional high-friction surface.

FIG. 8 illustrates buckle-as-slide (BAS) assembly 260 in an assembled, latched configuration. The BAS assembly 260 may constitute two primary components—a first buckle half that may be referred to as a “female latch body” and a second buckle half that may be referred to as a “male tongue body.” Together, the two halves may cooperate to secure, adjust, and quickly release a continuous length of high-strength webbing 720 used to cinch an inflatable rescue collar 220 around a wearer's torso while maintaining a load path that bypasses the inflatable cavity 430.

In certain aspects, the female latch body, located to the right in FIG. 8, may include an elongated rectangular web-slot bounded by radiused edges. The slot may accept a folded return of the high-strength webbing 720 so that the webbing 720 can be back-threaded and friction-locked in an adjustable manner. The inner walls of the slot may be contoured to eliminate sharp corners, thereby reducing stress concentrations on the webbing 720 fibers during high-load events such as vertical hoisting. The female body may also incorporate two opposing inwardly projecting latch detents that are dimensioned to receive corresponding prongs on the male tongue body.

In many implementations, the male tongue body, shown to the left in FIG. 8, may terminate in a generally planar plate featuring two canted locking prongs. Each prong may include a tapered lead-in nose facilitating guided insertion into the detents of the female body. Once inserted, the prongs may travel past an over-center position and spring outward, resulting in an audible and tactile “snap,” indicating full engagement. A pair of sculpted release tabs—visible as triangular wings—may flank the central plate of the male body. By squeezing the release tabs toward one another, a rescuer may flex the prongs inward, disengaging them from the detents and permitting rapid separation of the buckle halves. The required squeeze force may be tuned in production—generally between 8 lbf and 12 lbf—so that inadvertent release under rope 230 tension or wave impact is unlikely, yet intentional release with gloved hands remains feasible.

In several embodiments, both buckle halves may be machined or precision-cast from a marine-grade aluminum alloy (e.g., 7075-T6) that is subsequently anodized to a thickness between 15 μm and 25 μm for corrosion resistance. Anodizing dye may be applied in a bright hue—such as safety orange—to improve low-light visibility and to provide a quick visual cue identifying the cinch point of the collar 220. In alternative embodiments, the assembly may be manufactured from injection-molded acetal or polyether-ether-ketone (PEEK) for reduced cost or electromagnetic transparency, so long as finite-element analysis shows the polymer body can withstand dynamic loads exceeding 2 000 lbf without creep or catastrophic fracture.

In several alternative embodiments, the male tongue body's web slot may integrate an anti-slip toothed bar molded or machined into the inner wall. When the rescuer pulls the tail of the webbing 720, the bar may bite into the fibers, preventing gradual loosening under cyclic loads or vibration. To release tension, the rescuer may press a secondary cam lever (not shown in this primary depiction) that lifts the bar clear of the webbing 720, thereby allowing smooth re-adjustment.

In certain aspects, manufacturing tolerances may be held to ±0.05 mm on the latch detent pocket width to achieve repeatable engagement force. A light film of fluoropolymer dry-lube may be applied at assembly to reduce galvanic coupling between the aluminum body and stainless steel springs housed within the prong hinges. The springs themselves may be formed from 17-7 PH stainless, heat-treated to H900 condition, affording high resilience and low relaxation over 10 000 duty cycles.

In many situations, BAS assembly 260 may be subjected to salt-spray exposure >1 000 hours under ASTM B117 accelerated test protocols without showing red rust or functional degradation, thereby aligning with U.S. Coast Guard auxiliary equipment specifications. Where hostile chemical environments, such as fuel-oil spills, are anticipated, a PEEK variant may be specified because of its enhanced solvent resistance.

FIG. 9 illustrates the two complementary halves of a buckle-as-slide assembly 260 in an unlatched orientation, with the left-hand component identified as a latch 910 and the right-hand component identified as a tongue 920. Together, latch 910 and tongue 920 may interlock to form the BAS assembly 260 described earlier, enabling a continuous length of high-strength webbing 720 to be routed through each half, cinched around a torso or other body region, and released quickly without threading the webbing 720 completely free of the buckle.

In certain aspects, latch 910 may present an oblong load slot extending longitudinally across almost the full height of the casting. This elongated slot may accept a folded return of the high-strength webbing 720 so that the webbing 720 can be friction-locked in a two-pass configuration. The slot's sidewalls may incorporate shallow, crowned radii that mitigate edge wear on webbing 720 fibers and reduce the potential for tensile-induced nicks that may propagate over repeated hoist cycles. A pair of circular weight-relief apertures are visible near the lower left of latch 910; these apertures may reduce mass while providing drainage paths that minimize trapped saltwater and thereby mitigate pitting corrosion in marine environments.

In other aspects, latch 910 may feature two downward-facing detent pockets, each pocket sized to receive one of the spring-biased locking prongs carried by tongue 920. The pockets' internal walls may be hardened via micro-peen surface treatment or an anodic hard-coat to resist indentation over thousands of insertion-release cycles. Adjacent each pocket, a sloped lead-in chamfer may funnel the prong tips inward, providing self-centering alignment and ensuring full engagement even if a rescuer attempts to fasten the halves while wearing thick gloves or while the buckle is partially submerged.

In several embodiments, tongue 920 may include a broad rectangular web slot formed through its rear portion. The slot may support single-pass feed-through of the same high-strength webbing 720 that is anchored in latch 910, allowing the strap to slide freely during incremental tightening yet lock once tension is released. Toward the forward end of tongue 920, a paddle-shaped profile terminates in a pair of locking prongs, each prong being angled outward slightly so as to resiliently snap into the corresponding pockets of latch 910. A small domed pivot pin may secure each prong to the tongue body, permitting a limited inward flex when the release tabs on latch 910 are pinched.

In many aspects, both latch 910 and tongue 920 may be machined or precision-cast from 7075-T6 aluminum alloy and subsequently finished with a Type III hard-anodize of approximately 0.002 inch thickness. This coating may deliver galvanic isolation when the buckle contacts stainless-steel webbing 720 loops or brass grommets on an inflatable collar 220. Anodize dye may optionally be applied in contrasting colors—such as high-visibility orange on latch 910 and matte black on tongue 920—so that rescuers can rapidly recognize orientation, even in low-light situations.

In many configurations, the planar mating faces of latch 910 and tongue 920 may incorporate a tongue-and-groove dust shield geometry. When locked, the groove in latch 910 may envelop the tongue edge of tongue 920, restricting sand ingress that may otherwise foul the prong hinges. Where extremely fine silt conditions are expected—such as near river deltas—a thin PTFE gasket may be inserted into the groove to further impede particulate intrusion.

FIG. 10 illustrates a detachable two-compartment deployment bag 340, as shown in some embodiments. Referring to FIG. 10, which illustrates one example of a deployment bag 340 configured for multi-purpose water rescue operations, the view depicts a stacked arrangement in which a second compartment 242 is releasably coupled to a first compartment 140 while maintaining continuous tethering of a rescue rope 230. It shall be appreciated that other embodiments may reposition, resize, or re-shape the compartments while still achieving the same functional relationships described herein.

In certain aspects, the second compartment 242 may form an upper, generally cylindrical housing fabricated from a flexible, abrasion-resistant textile such as nylon 6,6, aramid, or a polyurethane-coated rip-stop fabric. A wall thickness between 0.15 mm and 0.35 mm may balance puncture resistance with light weight, for example. The illustrated geometry provides an open mouth dimensioned to admit coiled rescue rope 230 while remaining narrow enough to be comfortably gripped or attached to ancillary gear. Peripheral stitching, heat-sealed seams, or radio-frequency welded joints may improve water resistance without requiring full waterproofing, because the rope 230 can tolerate incidental wetting.

In various aspects, a plurality of buckles 130 may provide a mechanical interface between second compartment 242 and first compartment 140. Each buckle 130 may adopt a side-release format formed from glass-fiber-reinforced nylon or anodized aluminum, rated for static loads of at least 900 N. Passage slots within each buckle 130 may accommodate webbing straps sewn to the textile walls; such straps may wrap around both compartments to compress their profiles, thereby minimizing snagging when the assembly is thrown or drone-delivered. When the buckles 130 are disengaged, second compartment 242 may be detached entirely yet rope 230 remains continuously threaded through an interior aperture and tethered to the inflatable rescue collar 220 via a high-strength webbing 720.

In other aspects, the first compartment 140 may serve as a cradle for an inflatable rescue collar 220 in its deflated configuration. The depicted first compartment 140 adopts a tapered, pouch-like contour that may conform to the folded geometry of the collar 220 and may feature a wider mouth to facilitate repacking after training exercises. Construction may mirror that of second compartment 242 yet optionally incorporate an internal laminate barrier or a sacrificial abrasion panel so that metal components—such as a water-activated inflator 290—do not chafe through the fabric. An interior volume between 1.0 L and 2.5 L may accommodate collars 220 sized for adult buoyancy yet still fold compactly.

In numerous aspects, mesh flaps 350 may span an exterior face of first compartment 140. Each flap 350 may consist of polyester monofilament mesh with an approximate 2.5 mm aperture size, sewn along three edges and left free along a proximal edge so that water may drain and air may circulate to expedite drying of the collar 220. During field use, the mesh may also allow rescuers to verify visually whether the collar 220 is correctly repacked without opening the pouch. In colder climates, a finer mesh or a breathable microporous membrane may be substituted to limit ice formation while still venting humidity.

In several aspects, the structural relationship between first compartment 140 and second compartment 242 may provide a modular architecture enabling multiple deployment modes. When configured for a hand-toss rescue, a rescuer may grip second compartment 242 by the drawstring 310 and throw the assembly toward a victim. Upon water entry, the water-activated inflator 290 may fire automatically, inflating the collar 220 while rope 230 unspools from second compartment 242. Should greater throw distance be required, buckles 130 may be pre-released, allowing only second compartment 242 to travel toward the target while first compartment 140 remains clipped to the rescuer. Conversely, aerial deployments may hinge on attaching a drone hook to a ring (not shown in this view) on second compartment 242, enabling automated drop while preserving rope 230 connectivity.

In several alternative embodiments, second compartment 242 may include an internal float 520 (not illustrated in FIG. 10) to keep rope 230 buoyant near the surface, or may incorporate one-way drain grommets to meet maritime safety standards such as SOLAS. First compartment 140 may further include reflective decals printed with retro-reflective ink rated to ≥700 cd/lux/m² so that search-and-rescue spotlights can track the assembly at night. Materials may be dyed international signal orange or SOLAS yellow-green to maximize chromatic contrast in turbid water.

In many implementations, components shown in FIG. 10 may integrate seamlessly with a longitudinal channel 440 embedded in the rescue collar 220 that separates load-bearing webbing 720 from the inflatable cavity 430, for example. The illustrated compartments may also accommodate optional accessories such as chemical light sticks, GPS beacons, or RFID tags without altering the primary structural relationships.

Preferably, webbing tapes used to anchor buckles 130 may be woven from solution-dyed polyester with ultraviolet inhibitors, for instance, to resist fading after prolonged sun exposure on boat decks. Stitching thread may be bonded nylon size E or equivalent, with a minimum single-strand tensile strength of 67 N, for example.

FIG. 11 depicts a second compartment 242 with a rope exit point 1110 designed to guide the coiled rope 230 outward without tangling or obstruction, as shown in some embodiments. Referring to FIG. 11, which illustrates one example of a rope-storage subassembly that may form part of a multi-purpose water rescue system, the view depicts a generally box-shaped container—corresponding in many aspects to the second compartment 242 described earlier—through which a rescue rope 230 is routed outward via a designated rope exit point 1110. It shall be appreciated that other embodiments may adopt cylindrical, trapezoidal, or soft-pouch geometries while still providing the functional relationships disclosed herein.

In certain aspects, the rope 230 may be fabricated from a floating, low-density fiber such as hollow-braid polypropylene, ultra-high-molecular-weight polyethylene (UHMWPE), or a multi-filament polyester blend. A nominal diameter between 6 mm and 9 mm may balance tensile strength, coil flexibility, and hand grip. The rope 230 strands may incorporate signal-orange or fluorescent-yellow pigments, reflective tracer yarns, or both, thereby promoting visibility in low-light or turbid water conditions. In some embodiments, the rope 230 may be treated with a hydrophobic coating—such as a silicone-based or fluoropolymer finish-to minimize water absorption and reduce overall deployed mass.

In several aspects, the rope exit point 1110 may be formed as a circular or oval aperture centrally located on a front wall panel of the container. The aperture diameter may be approximately 1.1× to 1.4× the rope 230 diameter, allowing a single strand to glide through while discouraging bulk egress of the entire coil during accidental drops. Edges around rope exit point 1110 may be finished with a low-friction grommet molded from acetal copolymer, brass, or stainless steel so as to resist galvanic corrosion and chafe. A flared or countersunk profile may further reduce wear on rope 230 fibers, thereby extending service life in abrasive salt-water environments. In alternative constructions, a flexible thermoplastic elastomer ring or a stitched webbing eyelet may substitute for the grommet to simplify field repair.

In many aspects, the container wall surrounding rope exit point 1110 may be fabricated from a composite textile laminate comprising an outer layer of nylon 6,6 rip-stop, a mid-layer of thermoplastic polyurethane (TPU) film for water resistance, and an inner abrasion-resistant scrim. Seams may be flat-felled or radio-frequency welded, with seam tape applied internally to enhance hydrostatic head rating. A peripheral binding—possibly visible as a narrow border in FIG. 11—may stiffen the container mouth to maintain its square outline even when partially compressed.

In other aspects, a side release buckle, though unlabeled in the present figure, may be affixed near the container's rear left corner. That buckle may cooperate with complementary buckles on adjacent compartments to create a releasable attachment that maintains continuous tethering of rope 230 in accordance with earlier-described system requirements. If omitted in certain minimalist designs, hook-and-loop straps or magnetic fiducials may provide equivalent releasability.

In several embodiments, rope exit point 1110 may incorporate an optional elastomeric diaphragm or iris grommet that gently constricts around the rope 230 when no tensile load is present. Such an arrangement may inhibit unintentional back-feeding of rope 230 into the compartment under wave motion. The diaphragm material may be a UV-stable silicone or EPDM rubber configured to withstand temperatures from −30° C. to +60° C. without loss of elasticity. A split-seam design may permit on-site replacement without removing the rope 230.

In certain implementations, the container interior surface may feature a low-friction liner—such as a 30 D rip-stop nylon coated with silicone—to further minimize snagging of the rope 230 coil during deployment. A reflective instruction label may be printed onto this liner, detailing recommended re-packing procedures and maximum rope 230 length (e.g., 20 m to 30 m depending on model).

In several aspects, rope 230 may be factory-terminated at its distal end with a figure-eight knot, a sewn eye splice, or a polymer end cap, each of which may interface with a high-strength webbing 720 on a buckle-as-slide (BAS) assembly 260, not shown in this view. When tension is applied along rope 230, axial load may transmit directly to the BAS assembly 260 and subsequently to the high-strength webbing 720, thereby avoiding any load transfer to the inflatable cavity 430 of the rescue collar 220 located in a separate compartment. This separation of structural load paths may reduce failure risk and improve buoyancy characteristics of the collar 220.

In other embodiments, rope exit point 1110 may be eccentrically located—either off-center on the wall panel or on a corner seam—to accommodate unique throw trajectories or container geometries. The aperture may also adopt polygonal shapes such as hexagonal or teardrop forms to modulate rope 230 friction or to integrate molded splash guards that deflect incoming water. In yet further aspects, a spring-loaded gate or hinged cover may overlay rope exit point 1110 to prevent particulate ingress when the system is stowed for extended periods.

In certain aspects, the inflatable rescue collar 220 may be constructed from nylon and/or polyurethane coated fabric, providing durability and water resistance. The tubular body 294 may be designed with foldable edges that can be snapped down, allowing it to fit within the specific width specifications of the collar deployment bag (CDB), which may measure approximately 5″-6″×5″-6″. This design facilitates an accordion-style folding method for efficient storage and rapid deployment. The deployment bag 340 may utilize snaps, Velcro, or zipper technology to join its first compartment 140 and second compartment 242, allowing for easy separation when needed.

In some implementations, the inflatable rescue collar 220 may include opposing plastic buckle pieces sewn into the distal ends of the tubular body 294. When fastened together, these buckles create an additional throw handle, enhancing the collar's 220 versatility. A separate 5″-6″ long throw handle may be located near the water-activated inflator 290 at the rear of the collar 220, providing a point for rescuer manipulation and attachment of weights or lights. This design is particularly beneficial for rescuing hypothermic or less vigorous victims, especially in boat-to-water scenarios. When deploying the system, a rescuer may aim the open bottom of the second compartment 242 containing the rescue rope 230 in the intended throw direction, potentially achieving throws approaching double the length compared to throwing both compartments together. This technique can significantly extend the rescue range, particularly in challenging conditions.

FIG. 12 illustrates a side portion of the inflatable rescue collar 220, as shown in some embodiments. Referring to FIG. 12, which illustrates a side-elevation segment of an inflatable rescue collar 220, the drawing highlights three exterior adjunct components that may cooperate to enhance safety, durability, and stowability during water-rescue operations: an elastic strip 250, an over-pressure valve 270, and a length of reflective tape 1210. It shall be appreciated that other embodiments may vary the quantity, placement, or dimensions of these adjunct features while still achieving substantially similar functional results.

In some aspects, the over-pressure valve 270 appears near a distal end of the collar 220, oriented such that expelled gas vents radially away from the wearer during operation. The over-pressure valve 270 may include a spring-biased diaphragm calibrated to unseat at roughly 3 psi±0.2 psi, though other thresholds may be selected to match cartridge capacities or local regulatory standards. Valve construction may employ glass-filled nylon or acetal housing with an EPDM or silicone seal ring that resists saltwater ingress and ultraviolet degradation. A threaded retaining ring may permit field replacement, and a cap tether may prevent accidental loss. In another implementation, the same threaded boss may accommodate interchangeable valve cartridges allowing rescuers to tune vent pressure for pediatric, adult, or equipment-lifting modes.

In various aspects, the reflective tape 1210 may be bonded or sewn to an exterior panel of the tubular body 294. The tape 1210 may utilize microprismatic retro-reflective film certified to SOLAS Chapter II Part A performance levels, providing a minimum reflectivity of 700 cd/lux/m² at ±5° observation angles. The tape 1210 width may range between 25 mm and 38 mm and the length may span 60 mm to 120 mm per patch, although multiple patches may be staggered along the perimeter for 360-degree visibility. An acrylic pressure-sensitive adhesive layer, thermally activated during lamination, may form a waterproof bond to the TPU coating. In other embodiments, segmented sew-on strips may be used, or the reflective medium may be integrated directly into the base cloth via retro-reflective ink screen printing.

In many aspects, the elastic strip 250 shown near the upper quadrant may operate as a retractable cinch assisting in compact stowage of the collar 220. The strip 250 may comprise a flat elastic web-such as braided natural rubber covered with polyester yarns—measuring approximately 15 mm in width and exhibiting an elongation of 120% before yield. One or both ends of the elastic strip 250 may be bar-tacked to the outer wall so that, when the collar 220 is deflated, the elastic tension gathers the material into a rolled or Z-folded stack. This self-retaining action may reduce repack time and mitigate accidental unfolding inside the deployment bag 340. In alternative configurations, the elastic strip 250 may be supplemented with snap fasteners or hook-and-loop tabs to selectively lock the roll when long-term storage is anticipated.

In several implementations, the positional relationship among elastic strip 250, reflective tape 1210, and over-pressure valve 270 may be selected to avoid mutual interference. For example, the elastic strip 250 may be spaced at least 25 mm away from the edge of reflective tape 1210 to prevent localized abrasion when the strip 250 contracts and relaxes during packing cycles. Likewise, the over-pressure valve 270 may reside opposite the longitudinal channel 440 so that vented gas does not impinge on the high-strength webbing 720 or BAS assembly 260 hardware.

In some implementations, placement of elastic strip 250 may align with fold creases determined by a standardized packing template. Rescue personnel may lay the deflated collar 220 on a flat surface, fold inward along dashed guidelines (represented schematically in FIG. 12 as short hatching marks), and then rely on the pre-tensioned elastic strip 250 to compress the stack down to an overall thickness of less than 25 mm, thereby ensuring consistent fit within the first compartment 140 of the deployment bag 340.

FIG. 13 depicts a tall segment of the inflatable rescue collar 220 with a manual inflation handle 320 and a D-ring link connection 240, as shown in some embodiments. Referring to FIG. 13, which illustrates one exterior segment of an inflatable rescue collar 220, the view highlights a manual inflation handle 320, a D-ring link connection 240, and a strip of reflective tape 1210 that may collectively improve usability, safety, and integration with ancillary rescue equipment. It shall be appreciated that other embodiments may reposition, resize, or multiply any of these elements while achieving comparable functional outcomes.

In other aspects, the positional relationship among manual inflation handle 320, reflective tape 1210, and D-ring link connection 240 may be selected to avoid interference during deployment. For example, handle 320 may be located at least 40 mm away from reflective tape 1210 so that repeated handle pulls do not abrade the reflective surface. Similarly, D-ring link connection 240 may be offset longitudinally from the manual inflation handle 320 so that a towing line does not foul the handle 320 when tensioned. Designers may employ finite-element analyses to ensure that stress concentrations near the D-ring sew-line do not propagate into the adjacent over-pressure-valve boss or into edge welds.

FIG. 14 illustrates a container with four mesh flaps 350 folding outward around a central portion, as shown in some embodiments. Referring to FIG. 14, which illustrates one example top-down view of a compartment assembly associated with a multi-purpose water rescue system, four mesh flaps 350 are shown arrayed in a cross-like orientation around a central panel that exposes an oral tube 210. It shall be appreciated that other embodiments may vary flap count, hinge geometry, or closure style while still providing the ventilation, drainage, and rapid-access capabilities disclosed herein. 2

In several aspects, the oral tube 210 is centered on a square or rectangular backing panel, which panel may correspond to an inner wall of a first compartment 140 that normally houses the inflatable rescue collar 220 in a deflated state. The oral tube 210 may include a threaded valve seat molded from acetal resin that snaps into a reinforced grommet or weld boss in the fabric layer. A silicone duck-bill or rotary-disk check valve may reside within the seat to prevent backflow when the wearer exhales into the tube 210. The protruding tube length may be trimmed so that, when the mesh flaps 350 are folded closed, the tube tip is flush with or slightly recessed into the surrounding surface, thus avoiding abrasion against adjacent cargo. In a typical operating scenario, a rescuer may peel open two adjacent flaps 350, grasp the oral tube 210, and either orally inflate the collar 220 or bleed excess gas by depressing a spring-biased core pin, depending on situational need.

In other aspects, the flap-and-tube architecture may cooperate with the method of deployment recited elsewhere. During a throw-bag rescue, centrifugal force may cause the mesh flaps 350 to crack open mid-air, automatically presenting oral tube 210 once the assembly impacts water. Conversely, if the bag 340 must traverse surf zones while attached to a drone, a dissolvable retaining tape may hold all flaps 350 closed until water contact dissolves the tape, at which point flap tension springs outward and exposes the tube 210.

FIG. 15 depicts mesh flaps 350 arranged across a second compartment's 242 surface to promote ventilation and moisture drainage, as shown in some embodiments. Referring to FIG. 15, which illustrates a top-plan view of a square or slightly rounded compartment in a multi-purpose water rescue system, a continuous mesh envelope formed by four mesh flaps 350 may extend across substantially the entire exposed surface. It shall be appreciated that other embodiments may implement alternate flap counts, hinge orientations, or closure schemes while achieving the ventilation, drainage, and visibility advantages described herein.

In certain aspects, each mesh flap 350 may be constructed from a woven monofilament polyester grid possessing an average aperture dimension between about 2 mm and 3 mm. The yarn denier may range from 200 D to 420 D, providing a balance between tensile strength and suppleness so the flap 350 can conform to irregular cargo yet resist tearing when snagged by debris. A fluoropolymer or silicone topical finish may reduce surface energy, thereby encouraging rapid shedding of salt crystals and organic residue after marine deployment. Where chemical resistance to fuel or hydraulic oil is paramount—for example in helicopter winch operations—the flaps 350 may instead utilize spun-dyed polyphenylene sulfide fibers that maintain mechanical properties after hydrocarbon exposure.

In various aspects, the mesh flaps 350 depicted in FIG. 15 may be sewn or thermally welded to a peripheral frame of woven nylon tape roughly 20 mm wide. This tape may define a structural skeleton that maintains square geometry under modest compressive loads, preventing the central mesh lattice from ballooning outward when wind or water pressure acts upon the surface. The frame may further include an internal memory-wire insert formed from 1.2 mm nickel-titanium alloy, which may bias the flap toward a flat state once release tabs are disengaged, thereby promoting a consistent re-packing profile regardless of repeated folding cycles.

In many embodiments, the four mesh flaps 350 may converge toward a serpentine center binding strip—visible in the figure as a broad, curved band—in which two contiguous flaps share a common hinge line. This central binding may be stitched with a zig-zag pattern (e.g., 6 mm amplitude, 3 mm pitch) using bonded polyester thread size V-92, which may provide a flexible but durable articulation capable of surviving at least 500 open-and-close cycles without yarn breakage. The binding strip width, approximately 25 mm, may afford a graspable surface so a user wearing neoprene gloves can peel both adjoining flaps backward in a single pulling motion to expose interior payload items, such as an inflatable rescue collar 220 or a neatly coiled rope 230.

In other embodiments, the mesh flaps 350 may incorporate integrally formed buoyant inserts. For example, a 5 mm-thick closed-cell polyethylene foam pad may be heat-laminated between two mesh layers at each flap's mid-span, adding approximately 0.25 N of uplift per flap. Distributed buoyancy may help keep the compartment afloat even if an external float 520 detaches, thereby maintaining the proper orientation of the rescue system so reflective tape 1210 on an underlying inflatable collar 220 remains visible to searchlights.

In certain implementations, the mesh lattice geometry may be selected to optimize strength-to-weight ratio. A diamond-shaped aperture orientation (45° bias) may distribute tear forces evenly across warp and weft yarns, while a square orientation) (0°/90° may simplify cutting layouts and reduce waste during die-cut manufacturing. Where high puncture resistance is required—such as rocky river rescue—an aramid blend mesh featuring para-aramid yarns in the warp direction and polyester yarns in the fill direction may be substituted, thereby maintaining moderate cost while tripling cut resistance relative to all-polyester constructions.

In some embodiments, the four-flap arrangement of FIG. 15 may cooperate with drone-delivery operations. A separation sensor (e.g., a flush-mounted Hall-effect switch and magnet pair, not illustrated) may detect flap opening events; upon trigger, an onboard beacon may transmit a confirmation signal back to the deployment drone or to a handheld receiver, providing immediate feedback that the payload has successfully deployed. Power for such sensors may derive from a coin-cell battery encapsulated within a moisture-proof potting compound located beneath the central flap intersection.

Preferably, the entire mesh-flap assembly may withstand a minimum burst pressure differential of 20 kPa when submerged to 2 m depth and subsequently forced upward through breaking surf, ensuring that hydrodynamic loads do not forcibly invert the flaps. Laboratory testing to ISO 12402-9 cyclic-loading protocols may verify that seams retain at least 90% of initial tensile strength after 1000 hours of UV exposure and 50 salt-fog cycles.

Particular terminology used when describing certain features or aspects of the invention should not be taken to imply that the terminology is being redefined herein to be restricted to any specific characteristics, features, or aspects of the invention with which that terminology is associated. In general, the terms used in the following claims should not be construed to limit the invention to the specific embodiments disclosed in the specification, unless the above Detailed Description section explicitly defines such terms. Accordingly, the actual scope of the invention encompasses not only the disclosed embodiments, but also all equivalent ways of practicing or implementing the invention.

The above detailed description of the embodiments of the invention is not intended to be exhaustive or to limit the invention to the precise form disclosed above or to the particular field of usage mentioned in this disclosure. While specific embodiments of, and examples for, the invention are described above for illustrative purposes, various equivalent modifications are possible within the scope of the invention, as those skilled in the relevant art will recognize. Also, the teachings of the invention provided herein may be applied to other systems, not necessarily the system described above. The elements and acts of the various embodiments described above may be combined to provide further embodiments.

All of the above patents and applications and other references, including any that may be listed in accompanying filing papers, are incorporated herein by reference. Aspects of the invention may be modified, if necessary, to employ the systems, functions, and concepts of the various references described above to provide yet further embodiments of the invention.

Changes may be made to the invention in light of the above “Detailed Description.” While the above description details certain embodiments of the invention and describes the best mode contemplated, no matter how detailed the above appears in text, the invention may be practiced in many ways. Therefore, implementation details may vary considerably while still being encompassed by the invention disclosed herein. As noted above, particular terminology used when describing certain features or aspects of the invention should not be taken to imply that the terminology is being redefined herein to be restricted to any specific characteristics, features, or aspects of the invention with which that terminology is associated.

While certain aspects of the invention are presented below in certain claim forms, the inventor contemplates the various aspects of the invention in any number of claim forms. Accordingly, the inventor reserves the right to add additional claims after filing the application to pursue such additional claim forms for other aspects of the invention.