Heavy duty power valve

Details Heavy duty power valve Heavy duty power valve

1979-12-04

1981-03-03

Hershkovitz, Abraham

Fluid handling

Systems

With flow control means for branched passages

60548, 13759612, F16K 102

Patent

active

042534968

ABSTRACT:
A brake valve is disclosed, which is provided with an enlarged chamber, at one end of which is slidably disposed an annular piston. A reaction piston is carried on a valve rod; the reaction piston radially extends so as to cover the annular piston. When the reaction piston moves toward the annular piston, flow of fluid through the valve is restricted and then halted. Mating beveled conical surfaces are provided on the annular piston and the reaction piston to provide a mutual centering and seating action as the reaction piston is moved toward the annular piston. Belleville washer elements are stacked in opposed array on the valve rod for resiliently urging the reaction piston into engagement with the annular piston, and for inhibiting mechanical shocks from being transmitted from the valve rod to the reaction piston, and vice versa. Conical fluid flow stop members regulate the flow of fluid from the valve chamber to downstream brake elements. These fluid flow stop members are slidable into and out of engagement with respective annular seats; directional braking action is afforded by these stop members, such that one or both of the brake elements are pressurized from the valve chamber.

REFERENCES:
patent: 3761053 (1973-09-01), Bedo
patent: 3787029 (1974-01-01), Shellhause
patent: 3808817 (1974-05-01), Bennett
patent: 3827765 (1974-08-01), Husted
patent: 3900229 (1975-08-01), Husted
patent: 4106170 (1978-08-01), Schoeneweis
patent: 4141284 (1979-02-01), Wolf
patent: 4154326 (1979-05-01), Wolf

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