Patent ID: 8028700

Claim:
In a quick-donning full face oxygen mask for use as a smoke mask with a flight helmet having an exterior surface and a forwardly facing front opening in oxygen depleted environments and environments contaminated by smoke or other pollutants, the improvement comprising: a flexible helmet seal, said flexible helmet seal including first and second sides, a top side and a bottom side, an interior, and a pliable, flexible periphery, said flexible helmet seal including a flexible optical lens in a region adapted to overlie a wearer's eyes, and the flexible helmet seal including first and second rearwardly facing side channels defined by sealing surfaces along each of said first and second sides of the mask, respectively, that overlap and fit over the forwardly facing front opening of the flight helmet and flex to adapt to seal to the exterior surface of the flight helmet; said flexible helmet seal including a plurality of flexible sealing flaps at selected points, including first and second side flexible sealing flaps along the first and second sides of the helmet seal and an outer top flap on the top side of the flexible helmet seal, said first and second side flexible sealing flaps and said outer top flap being configured to seal to the exterior surface of the flight helmet; and said outer top flap extending between said first and second side flexible sealing flaps and said first and second rearwardly facing side channels.