Lightweight breathing device

Details Lightweight breathing device Lightweight breathing device

1992-03-27

1993-05-11

Burr, Edgar S.

Surgery

Respiratory method or device

Means for supplying respiratory gas under positive pressure

12820426, 12820524, A61M 1600

Patent

active

052092240

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. In another embodiment, high pressure air from the air tank is passed into a piston operated pressure reducer prior to being released to the user.

REFERENCES:
patent: 4928686 (1990-05-01), Nelepka
patent: 5099835 (1992-03-01), Nelepka

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