Breathing apparatus with chamber of variable capacity for scuba

Details Breathing apparatus with chamber of variable capacity for scuba Breathing apparatus with chamber of variable capacity for scuba

1991-05-22

1993-04-06

Burr, Edgar S.

Surgery

Respiratory method or device

Means for supplying respiratory gas under positive pressure

12820524, A61M 1600, A62B 704, A62B 902, F16K 3126

Patent

active

051994259

ABSTRACT:
A movable partition of a chamber of variable capacity consists of a diaphragm of elastomeric material which has been preshaped to provide a main part and a control part of reduced area, which is outwardly offset with respect to the main part and arranged for cooperating with a pressure reducer which selectively feeds a treating gas into the variable capacity chamber.

REFERENCES:
patent: 2900977 (1959-08-01), Marsh

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