Matches 101 - 150 out of 183 < 1 2 3 4 >


Match Document Document Title
5464010 Convenient "drop-down" respirator harness structure and method of use  
A respirator 15 has a harness 10 that allows the respirator body 20 to be conveniently disposed beneath a wearer's chin when not in use. The harness 10 includes a substantially flat, flexible...
RE35062 Filter element  
A filter element adapted for attachment to a respirator face piece which includes front and rear walls of filter material, a breather tube, and a porous inner layer which maintains the front and...
5450844 Locking device for the container of a gas mask and breathing equipment  
A container and locking device for gas tightly locking a container for gas masks and breathing equipment containing moisture-sensitive filter mass, including a first container shell and a second...
5446925 Adjustable face shield  
An adjustable face shield for protecting the face of the wearer, having a mask adapted to cover the nose and mouth of the wearer and a flexible eye shield having a transparent upper portion...
5427092 Respirator  
A respirator (1) is composed of a respirator casing having a pair of rectangularly contoured frames (12) mounted around rectangular apertures (11) on respective sides of the respirator (1). The...
5413097 Fan-supported gas mask and breathing equipment with adjustable fan output  
A fan-supported gas mask and breathing equipment with a fan unit with adjustable delivery output such that the delivery output of the fan and detection sensor will be automatically adjusted to the...
5411057 Detachable inhalation valve device for a respirator filter assembly  
A respirator filter assembly for use in a respirator apparatus wherein the assembly includes a respirator filter cartridge having a housing which contains filter material and has an inlet portion...
5411021 Breathing mask with speaking device  
A breathing mask (1) with a chamber housing fastened in the mask body (2) for accommodating at least one breathing connection (4), an exhalation valve (6), and a speaking diaphragm are improved...
5404874 Device for connecting a fan to a face mask filter  
A device for connecting a fan to the inlet of a face mask filter including an adapter having resilient arms to fasten it to the filter and an air duct extends from the fan outlet to the filter...
5374458 Molded, multiple-layer face mask  
A molded, cup-shaped face mask especially useful for medical and dental personnel has a first, second and third layer. Edge portions of the layers are substantially free of adhesion to one...
5372130 Face mask assembly and method having a fan and replaceable filter  
A face mask assembly and method of use having a housing and a replaceable filter mounted in said housing. A fan means draws air into a plenum chamber defined by said housing and said filter for...
5357947 Face mask  
An improved respiratory face mask is provided for filtering inhaled and exhaled air, while discharging exhaled gases in a manner reducing undesired re-inhalation, and reducing capture and...
5353789 A flaccid mask with straps and a supporting element that force the mask into sealing engagement with the wearer's face in response to force exerted by the straps on the supporting element  
A half mask (1) with a connection opening (13) for a filter (12), with a flexible half mask body (2) with a sealing edge (3) and with a solid filter holder (10) surrounding the half mask body. A...
5331957 Respirator for only filtering air inhaled  
A respirator for only filtering air inhaled, which comprises a nose-cover portion and mouth-cover portion for covering a person's nose and mouth respectively; both sides of the two portions have...
5303701 Blower-supported gas mask and breathing equipment with an attachable control part  
A gas mask and breathing equipment with a respirator, to the respiration gas inlet of which a respiration gas filter and a respiration supporting blower unit are connected, is formed such that the...
5240479 Pleated filter media having a continuous bead of adhesive between layers of filtering material  
A pleatable filter media, suitable for a use in a respirator for humans, is disclosed comprising a filter material including a meltblown polymeric material, such as polypropylene. A laminate...
5224474 Retrofitting gas mask voice amplifier unit with easily actuated switch means  
An electrical amplifier unit which removably attaches to a gas mask and includes a separate microphone for detecting voice sounds emitted by the wearer of the gas mask, circuitry for amplifying...
5222488 Respirator air filter cartridge with a replaceable filter element  
A respirator cartridge having a housing, a replaceable filter and a cover is provided. The cartridge is sealed by a lip on the filter frame and sealing rings on the housing and cover. The cover is...
5181507 Air purifying respirator suspension  
A respirator suspension system is disclosed. A face mask for covering the mouth and nasal passages of the user has a peripheral sealing portion for establishing a seal with the user's face and...
5148803 Respirator mask with easy-to-change respirator filter  
A respirator mask with a respirator filter and bellows sealing off the interior space of the mask against the surrounding atmosphere, which bellows surround the respirator filter at its end facing...
5140980 Hood mask and air filter system and method of manufacture thereof  
The present invention is directed to a hood mask for protecting the wearer from chemical and biological environmental contaminants. The hood mask includes a hood having a substantially tubular...
5104430 Mask with an air filtering device  
This invention relates to a mask with an air filtering device and in particular to one including a helmet adapted to a head of a user, a visor pivotally connected with a lower side of the helmet...
5086768 Respiratory protective device  
The respiratory protective device minimizes dead space by locating the exhalation valve mechanism slightly spaced from, but directly in front of the mouth. The inhalation valve mechanism surrounds...
5069205 Quick-donning head harness assembly  
A quick-donning head harness assembly (10) used in combination with a respirator face mask assembly (12) of the type including a rigid facepiece (14) and a flexible face seal (16), which head...
5063926 Respirator cartridge with sealant dispersion member  
A respirator cartridge having body, cover and filter media elements, and including a sealant dispersion member in one of the body or cover elements. The dispersion member directs the sealant...
5062421 Respiratory mask having a soft, compliant facepiece and a thin, rigid insert and method of making  
The novel respiratory mask has a soft, compliant facepiece to which is permanently sealed a relatively thin, rigid insert. The insert has swept back cheek portions, each formed with an aperture at...
5036844 Cover assembly and pre-filter for a respirator  
The present invention provides a cover assembly and pre-filter for use with a high-efficiency particulate filter of a respirator. The semi-rigid cover assembly fits easily and snugly over the...
5033507 Filter cover assembly for a respirator  
The present invention provides a filter cover assembly for use with the filter of a respirator. The semi-rigid filter cover assembly fits snugly over the face of the filter and, with the use of a...
5022394 Heat and moisture exchanger device for tracheostomy patients  
A heat and moisturizing exchanger device for use by patients having permanent tracheostomies when inspiring gases directly from the atmosphere. The device has a collar adapted to be sealingly...
5018518 Gas work with sensing and alarm means  
In accordance with the invention, gas masks have a gas sensor behind the filter. When the filter reaches its allowable absorption limit, the gas sensor emits a signal.
4964900 Respirator filter means for removal of tritiated water  
A filter for a respirator for removal of tritiated water having a housing with fluid inlet and output ports. A filter chamber is interposed between and in communication with the inlet and outlet...
4961420 Gas mask for operation in contaminated areas  
A gas mask is provided which includes a facepiece including a front portion of semi-rigid rubber highly resistant to chemical agents and a sealing skirting of soft rubber having a high mechanical...
4934361 Respirator  
Breathing equipment, e.g., a half mask-type respirator, is disclosed. A mask is provided with three ports of common dimension in any one of which inhalation or exhalation fittings housing...
4932399 Device for replacing the filter of a gas mask in a polluted atmosphere without any contamination risk  
A device is provided for preventing the inflow of air into a gas mask during the substitution of its filter in the presence of a contaminated atmosphere. The device includes a small plate having a...
4881538 Respirator air guide  
Air inhaled into a respirator encounters an air guide positioned inside the face-piece of the respirator which acts as a baffle for the air. The passage between the two contains elongate ridges...
4865637 Filter cartridge  
A filter cartridge for treating a fluid passing therethrough includes a filtering medium and a support container for holding the filtering medium. The support container includes a solid side wall...
4832018 Filter case holder  
A filter case for respiratory masks, in which filter inserts are held replaceably by a holder engaging in the case wall, is improved so that filter inserts of different structural heights and in...
4793342 Emergency smoke hood and breathing mask  
A mask-hood assembly for supplying persons, such as aircraft passengers, with clean air or oxygen during emergency situations such as a cabin depressurization, a fire emergency and when the...
4771771 Gas mask having a protective hood  
Gas masks each with a protective hood according to the invention are used as rescue equipment, e.g. escape equipment. For this purpose, they must be available when needed in a fail-safe condition...
4714486 Automated production of canisters  
A filter canister for use with gas masks has telescoping top and bottom parts that are, in the assembled canister, sealed together. A filter for particulate material is molded in situ in the top...
4688567 Gas mask  
This invention relates to a gas mask used for refuge in a fire, for example. The gas mask comprises a cylindrical mask body of fire-proof soft rubber material detachably connected to goggles of...
4686976 Safety mask  
For use in a safety mask comprising a body adapted to be placed over the nose and mouth wherein the body has an inlet valve, a filter associated with the inlet valve and an outlet valve, the...
4677976 Emergency mask  
The disclosed emergency mask comprises a hood, a face piece in the hood for respiration, and a canister-holder secured to the outer surface of the hood and communicating with the face piece. The...
4674492 Alarm system for respirator apparatus and method of use  
The alarm system of the present invention includes a pressurized air source for the purpose of pressurizing a face mask which surrounds the mouthpiece of respirator apparatus. An alarm indicating...
4630604 Valve assembly for a replaceable filter respirator  
A respirator having a disposable filter includes a valve body having a central aperture providing concentric inhalation and exhalation valves.
4628927 Reversible face mask with replaceable air filter insert  
A face mask in which an air filter insert is confined in place between mask components with a mask main member being at least partially reversible to facilitate filter insert replacement. A filter...
4595003 Protective mask for airborne toxic substances  
A protective mask includes a one-piece face piece molded of a transparent astomer. A visor in the face piece provides panoramic visibility and is resilient enough to deform under applied force to...
4579113 Disposable covers for respirators  
A disposable protective cover for face-engaging respirators, or the like, which is particularly useful in a contaminated environment in preventing particulate buildup on the respirator. For...
4573464 Filter respirator for protection against smoke and toxic gases  
A discharge valve is provided at the lower side of a smoke-proof, poison-proof respirator, and an opening part is provided at the front face thereof, a filter vessel being detachably fitted in...
4562837 Air escape filter apparatus  
An air escape filter apparatus for emergency use by a person comprises a filter which is contained within a filter housing which is accommodated within a half mask portion of a breathing mask...

Matches 101 - 150 out of 183 < 1 2 3 4 >