Patent ID: 7210477

Claim:
A respirator hood assembly comprising: a half mask adapted to cover a user's nose and mouth; at least one adjustable strap coupled to the assembly for releasably securing and placing the assembly on the user's head; at least one filtration unit integrally coupled to the half mask and in fluid communication therewith, at least one of the half mask and the at least one filtration unit having at least one inlet valve to allow the passage of ambient air therethrough, and the at least one filtration unit having at least one exhaust valve to allow the passage of expelled air therethrough; at least one inlet pipe having a flexible end removably secured to the at least one inlet valve and an opposing rigid end having at least one filter contained therein, the at least one pipe being in fluid connection with the at least one inlet valve and open adjacent the rigid end thereof to receive ambient air therethrough; and a bag adapted to enclose the head of the user with the half mask being disposed within the bag, the bag having an elastomeric neck seal for releasable securing and sealing the bag to the neck of the user, the at least one filtration unit being attached to a lower region of the bag above the neck seal and the at least one inlet pipe both extending exteriorly of and about the lower region of the bag above the neck seal in a circumferential direction and to one side of and rearwardly of the filtration unit to provide an external rigid gripping portion along said one side of the hood assembly for placing the hood on the user.