Process and expander for supplying respiratory gas to an underwa

Details Process and expander for supplying respiratory gas to an underwa Process and expander for supplying respiratory gas to an underwa

1990-05-18

1991-08-13

Crowder, Clifford D.

Surgery

Respiratory method or device

Means for supplying respiratory gas under positive pressure

12820426, 137908, A62B 0902

Patent

active

050387740

ABSTRACT:
An expander for compressed gas of the type having a valve 12, 13 delivering an expanded gas at 50 from a high pressure gas 6, 7, and a pilot expander 21 delivering via 41 a gaseous control charge into the compartment 17 of the principal expander. Useful in delivering respiratory gas in underwater diving.

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patent: 4971108 (1990-11-01), Gottlieb

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