249261 ⎘
Fluid handling; Line condition change responsive valves; Direct response valves [i.e., check valve type] Pivoted valves
Sub-classes:HYDRAULIC SYSTEM FOR A HOUSEHOLD APPLIANCE
#2Sealing valve
#3Eccentric backflow preventer
#4SYSTEMS, METHODS, AND APPARATUSES FOR MECHANICALLY SECURING A CHECK VALVE IN AN OPEN POSITION DURING MAINTENANCE AND TESTING OPERATIONS
#5Adjustable check valve
#6Check valve pivot pin retainer seal
#7Angle type check valve
#8Angle type check valve
#9Valve assembly for exhaust system
#10System and apparatus for controlling fluid flow in drainage systems
#11Externally mounted in-line exhaust gas valve
#12Check valve flapper with reduced moment of inertia and method of making
#13Check valves
#14Check valve assembly
#15Valves including multiple seats and related assemblies and methods
#16Check valves
#17Valve device for exhaust flow passage
#18Valves including multiple seats and related assemblies and methods
#19Passive exhaust valve with external torsion spring
#20Passive exhaust valve with dual torsion spring
#21Check valve with accelerated closure
#22Check valves
#23Check valve with accelerated closure
#24Passive exhaust valve assembly and forming method
#25Explosion-proof valve
#26Check valve housing
#27Check valve with backbone enhanced petals
#28Check valve flapper
#29Valve flapper spring stop mechanism
#30Pressure relief valve
#31Valve system
#32High opening velocity check valve
#33Self-sealing valve
#34Triple offset butterfly pressure relief valve
#35Valve device for exhaust gas flow path
#36Flow-limiting device
#37Apparatus and method for introducing a first fluid into the flow path of a second fluid and use of such an apparatus
#38Flapper relief valve
#39Check valve having petals with lift generating elements
#40Valves
#41Dual disk check valve with slotted stop bar
#42High opening velocity check valve
#43Variable resistance device
#44Wafer check valve assembly and related methods of use
#45Controlled isolation valve having reinforced sealing
#46Valve with electromechanical device for actuating the valve
#47Check valve
#48Hybrid valve for attenuation of low frequency noise
#49Differential dry pipe valve
#50Check valve
#51Tubular valving system and method
#52Dual plate check valve
#53Compressor
#54Downhole deployment valves
#55Flowline flapper valve
#56Downhole deployment valves
#57Downhole deployment valves
#58Valve seat and gasket for exhaust bypass valve
#59Unpowered apparatus for preventing backflow
#60Non-return valve assembly of the pivoting flap type, typically for insertion in floor drains
#61Nozzle check valve
#62Low precipitation rate rotor-type sprinkler with intermittent stream diffusers
#63CHECK VALVE WITH AXIAL THRUST ELEMENT
#64Inlet control valves for use with fuel delivery systems
#65Flapper valve
#66HIGH-SPEED CHECK VALVE SUITABLE FOR CRYOGENS AND HIGH REVERSE PRESSURE
#67High-temperature jointed assemblies and wear-resistant coating systems therefor
#68Check valve
#69MAGNETIC SEALING VALVE DEVICE FOR A BATTERY CASE
#70Valve for motor vehicle exhaust muffler
#71EXPLOSION PROTECTION VALVE FOR INTERRUPTING A FLUID FLOW IN A PIPELINE
#72Metal plate for dual plate check valve
#73DIRECT FREE COOLING
#74Pressure vortex device to allow flapper closure in high velocity fluid applications
#75Irregularly shaped flapper closure and sealing surfaces
#76Air intake modulator and method of using
#77Aperture-shaped variable valve
#78Valve for inflatable objects
#79One-way valve for a fuel-tank filling conduit
#80Adjustable orifice for coal supply conduit
#81WIND-PRESSURE SHUTTER AND COOLING FAN SYSTEM
#82Connector for fuel tank and check valve
#83Hydrogen-Generating Fuel Cell Cartridges
#84Flow control valve
#85Valves
#86Water circulation systems for ponds, lakes, municipal tanks, and other bodies of water
#87Pneumatic lift with unidirectional valve
#88Hydraulic circuit and manifold with multifunction valve
#89Tilting Disc Swing Check Valve
#90Pressure relief valve
#91Backflow preventing apparatus for water closets
#92Shock responsive check valve
#93Two-way actuator and method
#94Compliant check valve stop
#95Groundwater control system with automatic water flow regulator
#96Flowline flapper valve
#97Snap action valve with bumper pad
#98Fuel cell ejector with integrated check valve
#99Contoured check valve disc and scroll compressor incorporating same
#100Pressure relief assembly
#101Flow control valve
#102Valve with electromechanical device for actuating the valve
#103Negative pressure relief valve assembly
#104CHECK VALVE AND PUMP INCLUDING CHECK VALVE
#105Water circulation systems for ponds, lakes, municipal tanks, and other bodies of water
#106Low profile backwater valve
#107Radial flow oscillating valve for reciprocating compressors and pumps
#108CHECK VALVE MECHANISM FOR RODENTS AND/OR ODORS
#109Fast acting aircraft engine bleed air check valve
#110Centreline flow valve
#111CONTAINER INCLUDING VALVE ASSEMBLY FOR STORING LIQUIDS CONTAINING SOLIDS
#112One-way valve with flapper for vacuum bag
#113Safety valve torsional spring assembly and method
#114Regulator unit and method for regulating a flap opening of a flap situated in a mass flow line
#115Water circulation systems for ponds, lakes, municipal tanks, and other bodies of water
#116Aircraft pressure management system
#117Backflow preventing apparatus for water closets
#118Living-hinge air vent valve
#119CHECK VALVES WITH NOISE REDUCER
#120CHECK VALVES WITH HINGE SHAFTS RETAINED BY LOCKING PINS
#121Check valves with hinge shafts retained by welding
#122CHECK VALVES WITH HINGE SHAFTS RETAINED BY BUSHINGS
#123Multistage exhaust turbocharger
#124Fan damper
#125Check valve for fluid injector
#126Water guide for dishwasher
#127INTEGRAL HINGE
#128Downhole deployment valves
#129Multi-purpose exhaust valve spring
#130Passive valve for attenuation of low frequency noise
#131Hydrogen-generating fuel cell cartridges
#132Flapper latch
#133Valve flap for a plumbing valve
#134Internal combustion engine having exhaust gas recirculation
#135Check valve for vacuum sewage pipe and vacuum sewage system
#136Engineered composite quiet check valve
#137Electromagnetic split flapper pressure relief valve
#138Water circulation systems for ponds, lakes, municipal tanks, and other bodies of water
#139Quickly opening hinged check valve with pre-determined upstream pressure required to open specification
#140Safety valve having mono spring closure mechanism
#141Self-riveting flapper valves
#142Reinforced elastomeric hinge check valve
#143CHECK VALVE MECHANISM FOR RODENTS AND/OR ODORS
#144Throttle arrangement and exhaust system equipped with same
#145System and method for cementing through a safety valve
#146Side-mounted position indicator for flapper check valve
#147Keyless fire hydrant protection system
#148Fuel check valve
#149Check valve with an improved clapper and valve seat
#150Adjustable damper assembly
#151Snap acting split flapper valve
#152Hydrogen-generating fuel cell cartridges
#153Rainwater collection and diverging system
#154Quickly opening hinged check valve with pre-determined upstream pressure required to open
#155Pressure relief door for air duct work
#156Valve for inflatable objects
#157Fluid flow regulator for swimming pool cleaning system
#158Methods and apparatus for regulating airflow supply systems
#159Flapper type fill tube check valve
#160Low pressure check valve
#161Water guide for dishwasher
#162Check valve with pressure relief feature
#163Check valve and pump including check valve
#164Valve with electromechanical device for actuating the valve
#165Valve closing device
#166Flange valve
#167Safety valve having extension spring closure mechanism
#168Clapper check valve assembly
#169System and apparatus for controlling fluid flow in drainage systems with a cage device