Hydraulic piston with metallic O-ring groove and non-metallic sl

Details Hydraulic piston with metallic O-ring groove and non-metallic sl Hydraulic piston with metallic O-ring groove and non-metallic sl

1978-06-12

1980-05-20

Cohen, Irwin C.

Expansible chamber devices

Cylinder detail

With reinforcing member

92182, 92248, 92258, F16J 100, F16J 908, F16J 1104

Patent

active

042033543

ABSTRACT:
A fluid pressure actuated piston that consists of two parts, a metallic portion and a nonmetallic portion, is disposed in a conventional, metallic, cylindrical housing. The non-metallic portion is slidably engaged with the metallic housing. The metallic portion has a clearance to prevent contact with the metallic housing and is connected to the non-metallic portion in such a manner as to provide a recess for a conventional O-ring seal. The recess has metallic O-ring sealing surfaces on both the piston and the housing without any metallic contact to the housing.

REFERENCES:
patent: 2801714 (1957-08-01), Dotto
patent: 2862736 (1958-12-01), Russell
patent: 2926976 (1960-03-01), Bowerman et al.
patent: 3017861 (1962-01-01), Dobrikin
patent: 3146683 (1964-09-01), Hoffmann
patent: 3166991 (1965-01-01), Blenkle
patent: 3168301 (1965-02-01), Allinquant
patent: 3403759 (1968-10-01), Holcomb, Jr.
patent: 3503475 (1970-03-01), Mione
patent: 3603215 (1971-09-01), Leschisin
patent: 3678809 (1972-07-01), Doutt

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