Patent ID: 6550479
Filing Date: 2003-04-22
Classification: A62B

Abstract:
A personal respiratory protection device, comprising(a). a mouth piece providing a means to support, center and secure in a wearer's mouth, an oval breathing tube; (b). a valve chamber having an extension through the mouthpiece, two horizontal openings opposed to each other, one left and one right, for filtered air to enter when inhaling and a downward facing opening with a check valve to let exhaled air exhaust out; (c). a short exhaust tube directed downward from the check valve and chamber; (d). a pair of detachable coupling sleeve connectors with check valves on each filtered air opening, one left and one right, at the valve chamber; (e). a pair of tubes adapted for extending around the wearer's head and neck, one on the left side and one on the right side, directing filtered air to the check valves; (f). a â€œTâ€  connection adapted to be located behind the wearer's head, connecting the pair of tubes together with an opening at 90 degrees; (g). a filter socket with an outlet opening attached to the opening of the â€œTâ€  connection and an inlet threaded with a gasket to accept a threaded filter cartridge.