235 results about "Gas mask" patented technology

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 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 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.

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 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.