Relief valve for hydraulic systems

Details Relief valve for hydraulic systems Relief valve for hydraulic systems

1983-10-20

1987-07-28

Rosenthal, Arnold

Valves and valve actuation

Sequential opening or closing of serial ports in single flow...

251332, 251356, F16K 136

Patent

active

046827595

ABSTRACT:
A soft rubber seal member is molded in the cavity in the face of the valve core. During the molding process air can escape through the slots or gates in the annular ring in the face of the valve core. When rubber starts coming out the gate, the gates are closed off and the rubber hardens in the gates. The valve is used in combination with a valve housing provided with an entry orifice having a diverging exit section leading to a flat annular surface against which the flat central portion of the soft rubber seal will seat when the valve is closed. This obtains a large seating area and ensures uniform valve opening pressure.

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patent: 3007488 (1959-07-01), Wheeler, Jr.
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patent: 3705785 (1972-12-01), Goto
patent: 3945607 (1976-03-01), Dashner
patent: 4153233 (1979-05-01), Neyret
patent: 4211386 (1980-07-01), Yocum et al.
patent: 4478570 (1984-10-01), Johansson

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