Surgery – Respiratory method or device – Means for removing substance from respiratory gas
Reexamination Certificate
2005-12-06
2005-12-06
Patel, Mital (Department: 3743)
Surgery
Respiratory method or device
Means for removing substance from respiratory gas
C128S205290
Reexamination Certificate
active
06971386
ABSTRACT:
A respiratory protection air-purifying device that minimizes the area required in front of the face, especially around the mouth area, by locating the heavier filter cartridge behind the head, resting on the lower neck and shoulders, connected by two filtered air tubes around the head and neck partially counter-balancing the valve chamber directly in front of the mouthpiece, forming a ring around the head with the mouthpiece in the mouth and the exhaust port in the bottom of the valve chamber. The valve chamber has the filtered air intake check type valves opposite each other horizontally, an exhaust check type valve down with short exhaust tube and an oval mouthpiece tube passing through the mouthpiece, into the mouth. The respirator is worn around the head and neck with the filter resting on the lower neck and shoulders, the mouthpiece inserted in the mouth.
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Harness, Dickey & Pierce P.L.C
Patel Mital
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