Inlet valve for breathing apparatus second stage regulators

Details Inlet valve for breathing apparatus second stage regulators Inlet valve for breathing apparatus second stage regulators

1982-06-14

1986-08-05

Walton, G. L.

Valves and valve actuation

With means for blocking or disabling actuator

Fluid pressure biased latch

12820227, 12820228, 251 98, 251111, F16K 3500, F16K 3502, F16K 31143

Patent

active

046038337

ABSTRACT:
An inlet valve for use with a breathing regulator second stage which is connectable to a source of breathable gas. The inlet valve containing a flow-closing valve in the passages and being connectable in the gas circuit to the second stage. Extending externally of the valve body the inlet valve includes a control member. A detent member is attached to the valve body. The detent member having an element projecting externally to the valve body. Also, the detent member being urged into an orientation in which the element retains the control member with the valve in an open flow enabling position. The detent member comprises a piston in the valve body having an end within the passage and exposed to the inlet gas pressure therein. The piston having an element projecting through an opening in the valve body the piston being situated so that the control member will be retained with the valve in the open flow enabling position when the piston element is urged outwardly of the valve body the pressure of gas from the source.

REFERENCES:
patent: 804272 (1905-11-01), Schwarz
patent: 849121 (1907-04-01), GeFrorer
patent: 1248957 (1917-12-01), Voight
patent: 1984828 (1934-12-01), Fornwalt
patent: 2817489 (1957-12-01), Hesmer
patent: 3238943 (1966-03-01), Holley
patent: 3341088 (1967-09-01), Moynihan
patent: 4304229 (1981-12-01), Curtin

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