Patent ID: 6520177
Filing Date: 2003-02-18
Classification: A62B

Abstract:
A device for providing protection of a wearer in a hostile environment, comprising:a face cover provided with an eye shield and having a peripheral flexible gasket adapted to surround a wearer's face, and further having an air coupling for connection to a filtered air feed; a mouth-and-nose mask placed entirely within the face cover, affixed to the face cover and having sealing means at a periphery of said mask adapted for contacting the face of the wearer and for defining an inside volume around a mouth and nose of the wearer; a demand regulator carried by said mask, having an inlet provided with an oxygen coupling for connection to an oxygen feed source and connected to receive said filtered air feed originating from said air coupling and said face cover; a hood adapted to surround a wearer's head, having an opening which is sized and adapted for exposing the wearer's face to atmosphere and which said hood is arranged to sealingly receive the gasket of the face cover; an exhaust path communicating said inside volume of the mask to atmosphere through the regulator and then a breathe out valve on the face cover; partition means for separating a breathe-in path and a breathe-out path within the demand regulator, and means adapted for removably holding the mask on the face of the wearer and the gasket of the face cover in air tight contact with the hood.