24591 ⎘
Breathing masks or helmets, e.g. affording protection against chemical agents or for use at high altitudes or incorporating a pump or compressor for reducing the inhalation effort; Component parts for gas-masks or gas-helmets, e.g. windows, straps, speech transmitters, signal-devices Valves
Respirator mask
#302Powered Exhaust Apparatus For A Personal Protection Respiratory Device
#303Oxygen supply with carbon dioxide scrubber for emergency use
#304Personal air filter
#305Diaphragm
#306Aircraft air supply systems for reducing effective altitude experienced at selected locations
#307Switchable exhale filter system
#308Respirator having noncircular centroid-mounted exhalation valve
#309Self-contained breathing system
#310Unitary respirator with molded thermoset elastomeric elements
#311CHEMICAL AND BIOLOGICAL PROTECTION MASK
#312Respiratory protection device
#313Respirator flow control apparatus and method
#314Airflow control valve
#315Half facepiece
#316Respiratory protection mask
#317Exhaled vapor collection device
#318Respirator negative pressure fit check devices and methods
#319Sleeve-fit respirator cartridge
#320Respirator negative pressure fit check devices and methods
#321Respiratory mask having a clean air inlet chamber
#322Protective breathing apparatus inhalation duct
#323Abrasive blast respirator
#324Directional valve and respirator product with a directional valve
#325Aircraft crew member protective breathing apparatus
#326High performance ventilatory training mask incorporating multiple and adjustable air admittance valves for replicating various encountered altitude resistances
#327Mask and vent assembly therefor
#328Method and apparatus for integrating chemical and environmental sensors into an air purification filter through a reusable sensor port
#329Exhaust valve and method of manufacture therefore
#330One-way valve
#331Full face mask for a PAPR
#332Directional valve and breathing mask with a directional valve
#333Supply valve for air respirator
#334Breathing assembly for aircraft
#335COCKPIT OXYGEN MASK
#336Diaphragm
#337FACE MASK APPARATUS AND SYSTEM
#338Cleaning filter, air cleaning device using same, and air cleaning maintenance system
#339VALVE HAVING AN ABLATED FLAP
#340RESPIRATOR HAVING VALVE WITH AN ABLATED FLAP
#341Facepiece with open port
#342Self-contained breathing system
#343Surgical face mask, including reusable masks, with filtered inhalation and exhalation valves
#344Uni-directional valve, filtering face mask
#345Separably assembled filtering respirator
#346Mask and vent assembly therefor
#347Respirator mask for a compressed air breathing apparatus
#348Gas mask
#349DIRECTIONAL VALVE FOR A RESPIRATOR PRODUCT
#350Unidirectional valves and filtering face masks comprising unidirectional valves
#351Breathing apparatus
#352Breathing Mask
#353Respirator flow control apparatus and method
#354Self-contained breathing system
#355UNITARY RESPIRATOR WITH MOLDED THERMOSET ELASTOMERIC ELEMENTS
#356Breathing apparatus
#357RESPIRATOR FLOW CONTROL APPARATUS AND METHOD
#358REUSABLE POROUS FILTRATION MASK WITH CONCEALED RESPIRATORY FILTER AND EXHALATION VALVES
#359METHOD AND APPARATUS FOR VENTILATION ASSISTANCE
#360Mask device with blower
#361FILTERING FACE-PIECE RESPIRATOR HAVING AN INTEGRALLY-JOINED EXHALATION VALVE
#362Electromechanical oxygen valve and regulator
#363Face mask with unidirectional multi-flap valve
#364VENT AND STRAP FASTENING SYSTEM FOR A DISPOSABLE RESPIRATOR PROVIDING IMPROVED DONNING
#365Oxygen supply device
#366Filtering respirator with nasal and oral separation
#367Bi-directional valve
#368Cockpit oxygen mask
#369Respirators
#370Reusable exhalation valve & mouthpiece for use with filtering face mask
#371Face mask
#372Self-contained breathing system
#373Protective device
#374Face mask for the protection against biological agents
#375Filtering face mask with a unidirectional valve having a stiff unbiased flexible flap
#376Breath controlled air inlet for blower
#377Expiratory valve unit
#378Method Of Making A Filtering Face Mask Having New Exhalation Valve
#379Self-contained breathing apparatus facepiece pressure control method
#380Respiratory mask assembly with vent
#381Respiratory mask
#382Breathing mask
#383See-through mask
#384Emergency escape mask
#385Gas mask for normal pressure operation and overpressure operation
#386Breathing apparatus
#387Method of making a filtering face mask that has an exhalation valve attached thereto
#388Exhalation and inhalation valves that have a multi-layered flexible flap
#389Unidirectional respirator valve
#390Respiratory protection mask for a compressed air breathing apparatus
#391Filtering face mask that uses an exhalation valve that has a multi-layered flexible flap
#392Respirator module with speech transmission and exhalation valve
#393Reusable purified air breathing device
#394Antiviral mobile respiratory personal protection device
#395One-way suction check valve for facial mask integration
#396Hydration providing mask apparatus
#397Face shield visor with fan
#398Gauze mask structure capable of separating inhalation and exhalation
#399Resistance and filtration breathing device
#400Resistance breathing device
#401Valve/connection system to prevent downstream contamination from an upstream source while replacing filters
#402Apparatus and method for replacing an air filter of an air filtration mask
#403Hazardous-environment diving systems