Warning device for breathing apparatus having a pressure gas sup

Details Warning device for breathing apparatus having a pressure gas sup Warning device for breathing apparatus having a pressure gas sup

1979-08-22

1981-06-30

Hart, Charles N.

Surgery

Respiratory method or device

Means for indicating improper condition of apparatus

12820524, 137557, 116 24, 116 70, 116137R, A61M 1600

Patent

active

042757231

ABSTRACT:
A warning device for breathing apparatus which has a respiratory gas conduit through which respiratory gases are passed and which includes three interconnected chambers. Two of the chambers include diaphragm valves operable, responsive to pressure conditions therein, to actuate a piston in the third chamber which moves a signaling element into the gas conduit to signal a low pressure condition.

REFERENCES:
patent: 3719160 (1973-03-01), Christianson
patent: 3785333 (1974-01-01), Warncke et al.
patent: 3896837 (1975-07-01), Rohling

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