Motors: expansible chamber type – With motive fluid valve – To provide unequal inlet and exhaust flow rates to single...
Patent
1975-12-10
1977-05-10
Cohen, Irwin C.
Motors: expansible chamber type
With motive fluid valve
To provide unequal inlet and exhaust flow rates to single...
91463, 138 45, 138 46, F15B 13042, F15D 100
Patent
active
040221130
ABSTRACT:
A flow control valve comprises a body having a longitudinal bore therethrough at one end terminating in a first port and intermediate its ends a second port which communicates with said bore and is adapted for a connection to a cylinder port. The body has an apertured valve seat intermediate said ports and communicating with said first port. A valve element is adapted for registry with and for adjustment away from said seat. An apertured cap is threaded into the other end of the body and receives a manually adjustable valve control pin threaded thereinto and nested and sealed within said cap for relative longitudinal movements therein. A valve pin retainingly engages the valve element and at one end is secured to the valve control pin. A spring is interposed in compression between said valve element and valve control pin normally biasing said valve element towards said seat. The valve control pin is selectively adjustable within said end cap for variably spacing said valve element from said valve seat and thus variably restricting return flow of pressure fluid from said second port to said first port, in turn, controlling the speed of movement of a piston and rod within said cylinder.
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patent: 3438308 (1969-04-01), Nutter
patent: 3448765 (1969-06-01), McKinney
patent: 3877489 (1975-04-01), Louie et al.
patent: 3920042 (1975-11-01), Blatt
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