Closed-circuit positive pressure breathing apparatus with...

Details Closed-circuit positive pressure breathing apparatus with... Closed-circuit positive pressure breathing apparatus with...

A - Human Necessities

61

M

137/1.5

A61M 16/00 (2006.01)

Patent

CA 2011955

ABSTRACT There is disclosed a self-contained breathing apparatus of the positive pressure type wherein there is provided a pneumatic servo mechanism responsive to a pressure sensor to drive a breathing storage chamber by expansion of an oxygen containing gas from a storage tank therefor.

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