Piston construction for fluid power cylinders

Details Piston construction for fluid power cylinders Piston construction for fluid power cylinders

1974-04-05

1976-04-27

Cohen, Irwin C.

Expansible chamber devices

Piston

With fluid passage in piston face

92244, 277 63, 277 78, F16J 908

Patent

active

039532135

ABSTRACT:
In order to preclude the entrapment of low pressure fluid in the interior of U-form seal members in the peripheral grooves of a piston for a fluid power cylinder and in turn prevent the inward deflection of such seals, there are provided cuts or notches in the edges of the end portions of the piston member to effect the venting of the inside of the seal members. Preferably opposing flat chord-like cuts are made in the end portions of the piston down to a mid part of the peripheral groove such that the resulting flat sections can be used to fit into wrench or vise means for piston rod assembly purposes.

REFERENCES:
patent: 1448624 (1923-03-01), Gordon
patent: 1796415 (1931-03-01), Tyler
patent: 2686402 (1954-08-01), Samuel
patent: 2819131 (1958-01-01), Lankford
patent: 2878085 (1959-03-01), Barnhart
patent: 2962330 (1960-11-01), Kohl
patent: 3334549 (1967-08-01), Sheldon
patent: 3540745 (1970-11-01), Flock

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