Lightweight breathing device

Details Lightweight breathing device Lightweight breathing device

1989-01-03

1990-05-29

Burr, Edgar S.

Surgery

Respiratory method or device

Means for supplying respiratory gas under positive pressure

12820426, A62B 902

Patent

active

049286862

ABSTRACT:
A lightweight breathing device for underwater use, and in contaminated air is disclosed. The device employs a one-way valve which requires only one hand to effect operation, and a closure stem which is securely mounted against excessive air pressure from the valve, when air is released therethrough from an attached air tank. The one-way valve includes two interfitting components, one of which is rotatable, and which provides air orifices that form an air connection upon rotation to permit the release of air from the air tank.

REFERENCES:
patent: 4062356 (1977-12-01), Merrifield
patent: 4297998 (1981-11-01), Chritianson
patent: 4798203 (1989-01-01), Bartos

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