Breathing apparatus mouthpiece

Details Breathing apparatus mouthpiece Breathing apparatus mouthpiece

1989-04-19

1992-07-07

Burr, Edgar S.

Surgery

Respiratory method or device

Means for supplying respiratory gas under positive pressure

12820426, 12820524, A61M 1600

Patent

active

051273985

ABSTRACT:
A breathing apparatus mouthpiece which is reversibly switchable between an open circuit and a closed circuit system by rotating a special valve in the mouthpiece. The breathing apparatus mouthpiece is compact, lightweight, easy to operate and has low breathing resistance.

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patent: 4163448 (1979-08-01), Grouard
patent: 4266539 (1981-05-01), Parker et al.
patent: 4273120 (1981-06-01), Oswell
patent: 4304229 (1981-12-01), Curtin
patent: 4567889 (1986-02-01), Lehmann
"Design of Fully Redundant Autonomous Life Support Systems", Article by William C. Stone, Diving for Science, 1986, pp. 195-213.

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