Surgery – Respiratory method or device – Means for removing substance from respiratory gas
Reexamination Certificate
2005-03-01
2005-03-01
Bennett, Henry (Department: 3743)
Surgery
Respiratory method or device
Means for removing substance from respiratory gas
C128S206170, C128S201250, C128S206120
Reexamination Certificate
active
06860267
ABSTRACT:
A gas mask having a filter canister mount including an inhalation valve and a self-sealing mechanism that prevents air inflow when a filter canister is removed from the canister mount. In one embodiment, the self-sealing valve includes an elastomeric diaphragm mounted in the inlet port and includes a hinge and a skirt, the skirt having a sealing surface that is biased into contact with a valve seat. The filter canister includes a projection adapted to act on the hinge to pivot the skirt away from the sealing surface as the canister is fitted to the canister mount. In one embodiment, the canister comprises a stacked-radial-flow arrangement of particulate and carbon filtration media. In one embodiment, the gas mask includes a visor having a pair of spaced optical panels with a hinge mounted therebetween for relative rotational movement.
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Capon Andrew
Davis Brian E.
Dunn Gary M.
Friday David K.
Pike David W.
Avon Protection Systems, Inc.
Bennett Henry
McGarry Bair PC
Patel Mital
LandOfFree
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