235 results about "Gas mask" patented technology

A breath responsive filter blower respirator system for a gas mask including a pressure and control device, such as an optoelectric device and / or a pressure sensor, to control the air flow produced by an air blower. The optoelectric device detects the position of the mask's outflow valve. The pressure sensor measures air pressure in the mask relative to ambient air or the absolute air pressure in the mask. During exhalation, the pressure detector detects an increase in air pressure in the mask and / or the optoelectric device detects the outflow valve in an open position, and then signals the central processing unit to signal the air blower to reduce speed. The reduction in speed reduces air flow in the mask and lowers air pressure in the mask.

The present invention provides an anti-pathogenic air filtration medium comprising a fibrous substrate whose fibers are coated with coating comprising a polymer. The coating provides an environment that is destructive to airborne pathogens. In particular, the filter medium can be used in a building air handling system that both filters the air and eliminates pathogens. The filter medium also can be used to create a new bio-protective gas mask that not only offers protection against chemical warfare agents, but also provides protection against biological pathogens.

A family protective shelter which can be erected quickly inside in a home living room, family room, patio, or on an outside lawn area. This dome tent enclosure is designed of clear plastic sheet material which is impervious to gases used to conduct chemical warfare (such as nerve gas, mustard gas, serin, cyanide, and the like) dispersed biohazard aerosol compounds (such as anthrax, smallpox, polio, bacteria, viruses, or fungi), or other atmospheric toxins, such as those from a nuclear fallout. This protective “pop-up”, external frame enclosure will be sized to house at least two adults comfortably (6×9×7 high inside, up to about 10×18′×7′ high), will incorporate a zip-lock entrance / egress isolation portal chamber, and will communicate to the outside world through combat gas mask filters, plus phone, computer and electrical outlet feed-through, and perhaps a water trap coupling. The invention can keep a family of 1 to 10 (with a larger size) relatively isolated and safe from the harmful effects of a chemical biohazard, or nuclear fallout enemy attack for a matter of hours up to several days. The portal chamber can also connect together additional modules.

A pneumatic sealing system for a gas mask, which seals the mask to the face of the user by using a pump that employs air from inside the gas mask to variably inflate a mask seal during the breathing cycle. A double diaphragm pump, which has a driving diaphragm and a driven diaphragm, is connected to the inflatable mask seal via a hose duct. The double diaphragm pump is driven by the pressure difference inside the gas mask. During inhalation, the driving diaphragm fills with ambient air and the driven diaphragm fills with filtered air. During exhalation, the driving diaphragm and the driven diaphragm compress, releasing and trapping air in the mask seal.

Quick-connect assemblies and hydration systems incorporating the same. The hydration system includes a fluid reservoir and may be housed within a pack. Drink fluid is drawn from the reservoir through a drink tube to a mouthpiece. In some embodiments, the drink tube is connected to the reservoir at an exit port, the hydration system includes a manually actuated on / off valve, a filter, a pump, and / or a bite-actuated mouthpiece. The quick-connect assembly fluidly interconnects components of the hydration system and is configured to quickly release, and permit reattachment of, the detached components or replacement components. In some embodiments, the replacement components enable different performance from the detached components. In some embodiments, the quick-connect assembly is adapted to selectively couple a bite-actuated mouthpiece and a gas mask adapter to the drink tube. In some embodiments, at least a portion, if not the entire, hydration system is formed from a chemically resistant material.

A chemical and biological protection mask that combines a filter cartridge with a miniaturized high-intensity shortwave UV disinfecting system in a compact easy-to-wear and fully portable form factor. The gas mask comprises a mask portion for covering at least the nose and mouth of a user, a one way exhalation valve mounted on the mask portion, a coupling to an inhalation opening into the mask portion, a filter canister, and a novel UV-illumination tube attachable between the inhalation valve coupling and filter canister. The UV-illumination tube further comprises an aluminum tube, a plastic insert positioned inside the aluminum tube, and a plurality of circuit boards seated within the insert. The circuit boards each have a plurality of UV LED lights axially mounted thereon to irradiate and disinfect air passing through the UV-illumination tube. The UV LED lights preferably emit light within a range of from 240 nm˜280 nm wavelength, and are powered by a battery connected to a voltage regulator. A current chopping circuit is connected between said voltage regulator and said UV LED lights for providing pulsed current thereto. An optional solar cell is disclosed for powering the UV LED lights directly or for recharging the battery, and the solar cell may be mounted atop a visor attached to said mask.

A filter for a gas mask has an elliptical or circular, convex shape to conform to the curvature of the wearer's face, or a planar shape. The filter comprises a double particulate filter element and a double adsorption filter element configured for axial airflow therethrough with a bifurcated flow pattern. The adsorption filter element comprises a granulated charcoal, a composite material having carbon particles combined with binder particles, or an immobilized bed of charcoal granules and EVA-coated fibers.

A self-sealing protection filter port for gas masks prevents contamination of the inner-environment of the mask during exchange of filters and therefore increases safety. A biased valve closes the air inlet to the port when the protection filter is not installed. As a new filter is inserted, the valve is forced open, allowing filtered air to flow through the air inlet to the user. The protection filter engages the filter port using a retaining element. The self-sealing protection filter in a protection mask having an internal close-biased valve is installed in the standard protection filter port of the mask.

A system and method for cleaning air of harmful chemical and biological agents comprises a UV light source and photoactivatable catalyst impregnated in a porous material. Photoactivation of the catalyst generates hydroxyl radicals in the presence of water vapor, which destroy microbes and harmful chemicals. Representative devices include gas masks, respirators, and commercial air purification systems.

A retention device and method for retaining an object, including preferably a gas mask, in position proximate a user's mouth. The retention device includes straps coupled to both sides of the object and having at ends thereof ear pieces. The ear pieces fit over the ears, and are configured to receive the strap at a point proximate the tragus portion of the ear, causing pulling forces to be on the posterior center portion of the ear rather than on the top of the ear. The ear pieces have a downwardly exterior anterior leg and a downwardly extending posterior leg. In one embodiment, the ear pieces are substantially U-shaped. In another embodiment, the ear pieces are substantially ring-shaped.

An End of Service Life (ESLI) and Residual Life Indicator (RLI), for gas masks and other filters, where the indicator includes a solid conduit with one end closed by a transparent material and the other by a porous material. In one implementation the conduit contains, a powder that can react chromogenically. In another implementation, the porous material includes a reagent that can react with the target gas and release a reactive gas. The transparent end of the conduit is coated internally with a chromogenic reagent that changes color when either the target gas or the gas produced in the reaction reaches it. The ESLI / RLI may be inserted into the filter from different directions to accommodate practical filter or mask designs. The ESLI / RLI may contain more than one chromophore to alert users of the penetration of different gases or classes of gases.

A personal hydration device providing fluid delivery to an external mouthpiece and a gas mask mouthpiece is disclosed. The personal hydration device includes a container having an exit port and an exit valve, a diverter valve, an external mouthpiece, a gas mask with a gas mask mouthpiece, and three hoses connecting these elements together. The diverter valve has a body, including one inlet and two outlets, and a spool moveably mounted within the body. The spool is moveable between a first position and a second position, and normally biased toward the first position. When in the first position, the first outlet is in an open position and fluid is delivered to the external mouthpiece. When in the second position, the first outlet is in a closed position and fluid is delivered to the gas mask mouthpiece.

A gas mask liquid delivery system including a gas mask having a liquid inlet port. A liquid control adapter having a body with a first end with an outlet opening formed therein, a second end with an inlet opening formed therein, and an interior chamber formed within the body. An inlet chamber extends from the inlet opening to the interior chamber and an outlet chamber extends from the outlet opening to the interior chamber. The inlet and outlet openings, inlet, interior, and outlet chambers, define a flow path when placed in open communication with each other to permit liquid to flow through the flow path. A stopper controls the flow of the liquid through the flow path. The outlet opening connects the adapter to the liquid inlet port. A flow tube connects a liquid source to a connector, wherein the inlet opening of the adapter is connected to the connector.

This invention relates to respirator, a half face mask with the shape of a concave-rectangular cup that fits the facial features comfortably. The mask covers user's mouth and nostrils to provide a breathing chamber and has three opening ports, one on the bottom receiving the filter cartridge and two of the same dimension on the sides receiving the exhalation tubes. The three components are grooved-fitting embedded into the mask and have one-way air flow functionality controlled by the mean of flapper valve mechanism. The filter cartridge contains layers of mesh and chemical compounds to filter dust particles, destroy carbon monoxide and absorb other toxic gases. The present invention offers a respirator having the functionality of a gas mask but aesthetic-simplicity shape of a half face mask which commuters can conveniently wear in polluted metropolitan or hazardous atmosphere to prevent dust particles and toxic gases go into wearer's lung.

A gas mask and breathing equipment is provided with a circuit for breathing gas and with a heat exchanger (7) cooled by an evaporating agent. The evaporating agent is introduced from an evaporating agent container (8) into the heat exchanger (7) via at least one group of spraying elements (9) and a gas delivery means (11) allows a gas volume flow to flow through the heat exchanger (7).

A self-sealing protection filter port for gas masks prevents contamination of the inner-environment of the mask during exchange of filters and therefore increases safety. A biased valve closes the air inlet to the port when the protection filter is not installed. As a new filter is inserted, the valve is forced open, allowing filtered air to flow through the air inlet to the user. The protection filter engages the filter port using a retaining element. The self-sealing protection filter in a protection mask having an internal close-biased valve is installed in the standard protection filter port of the mask.

The present invention relates to a gas mask comprising: a rubber material face mask, which is worn on the face for protecting the face against toxic substances, and which includes a purification container connection hole to which a purification container is connected, a lens hole in which a lens is installed, an exhaust hole in which an exhaust unit for exhausting inside air is installed, and a hook which protrudes toward a back direction; a buckle onto one side of which the hook on the face mask is coupled so as to be separable; a back head cover, which comprises a coupling lace which is coupled to the other side of the buckle so as to be separable, for covering the back head of the wearer by connecting to the back side of the face mask by means of the buckle when the coupling lace is coupled to the buckle; a headscarf, which is provided with an exposure hole through which the front surface of the face mask provided with the connection hole, the lens hole, and the exhaust hole, is exposed, wherein the periphery of the exposure hole is connected to the edge of the front surface of the face mask to shield the head portion of the wearer; and a connector for partially connecting the periphery of the exposure hole, which is formed on the headscarf, to the face mask. In the present invention, the periphery of the exposure hole, which is formed on the headscarf, is connected to the face mask by means of the connector so that the headscarf is securely and quickly connected to the face mask, thereby protecting the head of the wearer from toxic substances.

The invention provides a dustproof gas mask, which comprises a mask, a respiration device, two filters, a lower bracket, protection goggles and a mask rubber band. A respiration device installation port is formed in the mask. Two filter installation ports are also formed in the two sides of the respiration device installation port in the mask. The respiration device is arranged in the respiration device installation port. The two filters are respectively arranged in the two filter installation ports. The protection goggles are arranged on the mask. The lower bracket is arranged in the mask. The two ends of the mask rubber band are respectively connected with the two ends of one side close to the protection goggles on the mask. The dustproof gas mask provided by the invention has the advantages that the parts of the mask are easy to disassemble and assemble, the mask is convenient to carry and wear, the weight of the mask is lighter and no uncomfortable feeling is caused to a user who wears the mask; since the dustproof gas mask is provided with the detachable protection goggles, the glasses can be conveniently replaced, the pupil distance can be conveniently adjusted and the dustproof gas mask can meet the wearing and labor protection demands of different patients who suffer from refractive errors.

A system and method for measuring contact pressures between two surfaces, and especially, between the body and a device resting on the body, e.g., the skin and a breathable gas mask. A deformable, resilient probe having a flow passage therein is initially placed between the two surfaces such that the flow passage is blocked. Fluid pressure within the probe is then increased until the pressure in the probe overcomes the contact pressure between the two surfaces, such that fluid begins to flow through the flow passage in the probe. The pressure at which the fluid begins to flow through the flow passage in the probe is recorded as the contact pressure between the two surfaces. Contact pressure maps created using this apparatus and method may be used to create anthropometric models of the face and other body parts.

A pneumatic sealing system for a gas mask, which seals the mask to the face of the user by using a pump that employs air from inside the gas mask to variably inflate a mask seal during the breathing cycle. A double diaphragm pump, which has a driving diaphragm and a driven diaphragm, is connected to the inflatable mask seal via a hose duct. The double diaphragm pump is driven by the pressure difference inside the gas mask. During inhalation, the driving diaphragm fills with ambient air and the driven diaphragm fills with filtered air. During exhalation, the driving diaphragm and the driven diaphragm compress, releasing and trapping air in the mask seal.

The invention relates to the field of chemical materials, in particular to a chlorinated butyl rubber and silicone rubber blended material applied to a body material of a gas mask body. The chlorinated butyl rubber and silicone rubber blended material is prepared from, by weight, 50-100 parts of chlorinated butyl rubber, 5-50 parts of silicon rubber, 30-50 parts of intermediate super abrasion furnace black n220, 20-40 parts of high abrasion furnace black n330, 5-15 parts of zinc oxide, 1-10 parts of magnesium oxide, 0-10 parts of accelerator TT, 2-10 parts of accelerator ZDC, 1-10 parts of vulcanizer DCP, 2-8 parts of stearic acid, 2-12 parts of antioxidant methylene 4426 and 2-10 parts of anti-aging agents MB. The blended material has good gas defense performance, biocompatibility is improved due to the addition of silicon rubber, and the wearing comfort is improved on the premise that the protection performance is ensured.

The present invention relates to a canister fixing unit for a hood-type gas mask. The present invention comprises: a tubular cylinder exposed from the inside to the outside of a hood provided with a ventilation hole on the front side thereof through the ventilation hole, and having a female screw on the inner circumferential surface of the cylinder so that a protruding portion on a canister having a screw is coupled thereto, and having a stopper protrusion for hooking onto the inner surface of the hood; an external ring positioned on the exterior of the hood for coupling to the cylinder, and provided with a hole through which the cylinder is inserted; a fixing means for fixing a portion of the external ring to the cylinder; and a locker for preventing reverse rotation of the canister coupled to the cylinder to prevent the canister from separating from the cylinder. The canister coupled to the cylinder is fixed by means of assembly through the fixing means.

The invention discloses an optical system of a reflective helmet-mounted display based on an antigas mask. The optical system is characterized by comprising a hypertorus toroidal reflector and a relay system, wherein the reflector is provided with a hypertorus toroidal surface; and light rays are emitted from a micro display screen, pass through the relay system and the reflector in sequence, and finally enter human eye pupils. The optical system has the advantages as follows: the size of the system is small and the weight of the system is light; as the inclination angles of a mechanical shaft of the reflector and main light ray of a zero view field are zero and the reflection surface is plated with a narrow-band high-reflection film, dual-channel displaying can be achieved; and as the dual-channel displaying is adopted, the whole helmet-mounted display hardly blocks the view field, and the human eyes do not need to deflect when watching, so that the comfortableness is improved.

Gas masks and canisters for gas masks have a chemical sorbent that protects the respiratory system of the wearer from gaseous compounds. The remaining service indication systems for respiratory protections systems provide a warning to the wearer that the capacity of the chemical sorbent to adsorb or absorb further compounds is nearly depleted. A remaining service life indication system has a computer memory device for storing information concerning the canister for determining an end of the service life of a gas mask, a canister and / or a cartridge and such devices from the input of various sensors.

The utility model relates to a fire-extinguishing escape method and a device for a high-rise building. A heat insulation chamber, a buffering chamber, an oxygen cylinder, a gas mask and a fire extinguisher are utilized to form an asylum device; and the asylum device, fire extinguishing substances, a fire pump, a power generator, a fire hose, a fire-extinguishing substance supply pipe and an escape ladder are fixedly arranged on more than one floor of the building. When the fire happens to the building, and an electric network source and a source deepening on the power transmission are interrupted, the fire is extinguished by means of an independent fire extinguishing device; meanwhile, the adjacent fire pumps are connected with the power transmission fire extinguishing substances to carry out fire extinguishment to a high-rise area; and an evacuee can wait for rescue in the asylum device through the buffering chamber and the heat insulation chamber or evacuate from the outside of the building by utilizing the escape ladder in an escape device. As the asylum device, the independent fire extinguishing device, the fire extinguishing substances and the escape device are fixedly arranged in the building, the firefighting escape method and the device are particularly suitable for the fire control and the escape from a super high-rise building.