Integrated breathing system
First Claim
1. A portable system for providing air to a user in contaminated areas comprising a tight-fitting, washable, filterless air mask covering a user'"'"'s nose and mouth, and having right and left sides, an adjustable head strap attached to the mask for holding the mask firmly over a user'"'"'s nose and mouth, right and left air supply inlet and exhaust tubes connected to the sides of the mask and extending around right and left sides of a user'"'"'s head and check valves in the mask for controlling flow from and to the inlet and exhaust tubes and the mask respectively and for preventing contact of the valves with contaminated air, and for preventing airborne materials outside the mask from clogging the valves, the right and left inlet and exhaust side tubes connecting behind a user'"'"'s head to a main inlet tube and a coaxial exhaust tube, the main inlet and exhaust tubes being flexible and having distal ends connected to a releasable window mount.
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Accused Products
Abstract
The integrated breathing system of the present invention incorporates a mask covering the nose and mouth, an intake having two side hoses and a central inlet tube, and a window mount. The two side hoses attach to the opposite sides of the mask and surround the user'"'"'s head for stability, connecting in the rear to the central tube. The central tube extends oppositely to a connection with the window mount for communication with air on the other side of the window. The window mount can be a foam block, a clip or an adjustable block, and a fan or other air conditioning means can be incorporated for providing a positive air flow to the mask. The system is an inexpensive and simply constructed alternative to the expensive breathing systems used in work places.
77 Citations
27 Claims
- 1. A portable system for providing air to a user in contaminated areas comprising a tight-fitting, washable, filterless air mask covering a user'"'"'s nose and mouth, and having right and left sides, an adjustable head strap attached to the mask for holding the mask firmly over a user'"'"'s nose and mouth, right and left air supply inlet and exhaust tubes connected to the sides of the mask and extending around right and left sides of a user'"'"'s head and check valves in the mask for controlling flow from and to the inlet and exhaust tubes and the mask respectively and for preventing contact of the valves with contaminated air, and for preventing airborne materials outside the mask from clogging the valves, the right and left inlet and exhaust side tubes connecting behind a user'"'"'s head to a main inlet tube and a coaxial exhaust tube, the main inlet and exhaust tubes being flexible and having distal ends connected to a releasable window mount.
- 23. An integrated portable breathing system apparatus comprising a tight-fitting, washable, filterless mask for covering a lower facial area of a user, an adjustable head strap connected to the mask for holding the mask tightly over a nose and mouth of the user, a closed loop air supply and exhaust connected to the mask, further comprising elongated inlet and exhaust air tubes having proximal and distal ends, proximal ends of the air tubes connected to the mask and distal ends of the air tube extending to a removable window mount, inlet and exhaust check valves within the mask and connected between the proximal ends and the mask for flowing air from the inlet tube to the mask and for flowing air from the mask to the exhaust tube respectively, and for preventing contact of the valves with contaminated air, and for preventing airborne materials such as glues and paints from clogging the valves, the tubes being flexible, lightweight and form-sustaining, and having large open lumens for freely flowing air from the distal end to the proximal end of the inlet tube and from the proximal end to the distal end of the outlet tube, with low pressure difference between the ends for supplying air from outside a window through the tube to the mask in sufficient volume to allow normal inhalation for protection against airborne solvents, vapors, minuscule particles of dust, isocyanates, polyurethanes, amine containing epoxies, boat paints, organic vapors and fumigants, wherein the inlet and exhaust tubes are concentric, wherein the exhaust tube is positioned outside the inlet tube.
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27. A portable breathing system comprising means for preventing inhalation of airborne solvents, vapors, minuscule particles of dust, isocyanates, polyurethanes, amine containing epoxies, boat paints, organic vapors, fumigants, and the like, in contaminated areas;
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the breathing system further comprising a tight-fitting, washable, filterless mask adapted to cover the nose and mouth of a wearer, an adjustable head strap attached to the mask adapted to firmly hold the mask over the nose and mouth of a wearer; a closed loop air supply and exhaust connected to the mask comprising at least one inhalation check valve and at least one exhalation check valve, and means for preventing contact of said valves with contaminated air and for preventing particles such as glues and paints from clogging said valves, said means for preventing contact and clogging of said valves comprising right and left inlet and exhaust side tubes connected to the mask and adapted to extend along the right and left sides of the wearer'"'"'s face and adapted to connect behind the wearer'"'"'s head, a main inlet connected to both the right and left inlet and exhaust side tubes, the main inlet tube being covered by a coaxial exhaust tube, the main inlet tube and the coaxial exhaust tube being flexible and having distal ends; and a releasable window mount having the distal ends connected thereto, the window mount having a non-contaminated source of air on an exterior side and the contaminated area on an interior side, whereby a closed loop is defined from the exterior side of said window mount to the wearer via the main inlet tube, the right and left inlet tubes, the at least one inhalation check valve and the mask, and back to the exterior side of the window mount via the mask, the at least one exhalation check valve, the right and left exhaust tubes, and the coaxial exhaust tube.
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Specification