Patent ID: 6701925
Filing Date: 2004-03-09
Classification: A62B

Abstract:
A protective respiratory apparatus comprising:a neck-sealable hood adapted to enclose the head of a wearer, the hood having an interior and an exterior, a transparent visor formed in said hood; said transparent visor providing a viewing window for said wearer; a half mask cup positioned in said interior of said hood; a filter mounted in said hood; part of the filter being disposed exterior to said hood and part of the filter being disposed in the interior of the hood; the filter having a filtration part that is pervious to fluid flow and a coupling part that is impervious to fluid flow, said filtration part being disposed radially outwardly of the coupling part; the fluid flow following a path of travel through the filtration part, into the interior of the hood, flowing over the visor, and into the half mask cup; whereby the filter is directly attached but not fluidly coupled to the half mask cup; and whereby the filter is fluidly coupled to the interior of the hood.