Motors: expansible chamber type – Fluid supply through diverse paths to single expansible chamber – Second path activated in response to pressure or flow in...
Patent
1974-05-31
1978-02-28
Cohen, Irwin C.
Motors: expansible chamber type
Fluid supply through diverse paths to single expansible chamber
Second path activated in response to pressure or flow in...
91447, 137110, F15B 1304
Patent
active
040759288
ABSTRACT:
A safety valve for use in a compressed air line having a supply valve and a control valve, to prevent inadvertent sudden shifting of the controlled part when the line is exhausted and later repressurized. The safety valve comprises a normally closed piston-operated poppet valve, the piston chamber and outlet port being connected to the supply port through a bypass with an adjustable restriction upstream of the valve member. In one embodiment, the adjustable restriction comprises a replaceable plug threaded in the valve body. In a second version, the adjustable restriction comprises a needle valve mounted in a housing cover.
REFERENCES:
patent: 1290865 (1919-01-01), Anthony
patent: 2051732 (1936-08-01), McKee
patent: 2593564 (1952-04-01), Ives
patent: 2954009 (1960-09-01), Juilfs
patent: 2995141 (1961-08-01), Hipp
patent: 3371759 (1968-03-01), Sapolsky
patent: 3834621 (1974-09-01), Pacht et al.
Cohen Irwin C.
Ross Operating Valve Company
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