Piston and seal assembly

Details Piston and seal assembly Piston and seal assembly

1979-12-20

1982-04-27

Smith, Robert I.

Seal for a joint or juncture

Seal between relatively movable parts

Relatively rotatable radially extending sealing face member

277DIG6, F16J 920, F16J 1518

Patent

active

043267246

ABSTRACT:
A one-piece piston is formed with an outwardly open annular groove by machining in which a piston ring is received sealingly relative to the wall of a cylinder. According to the invention the flanks of the ring and the groove are formed as frustocones at least on one side of the ring. A support ring or backup ring may be provided between the piston ring and the other groove flank. The piston ring can be composed in whole or in part of a nonmetallic material such as polytetrafluoroethylene.

REFERENCES:
patent: 2186020 (1940-01-01), Hall
patent: 2807511 (1957-09-01), Fleming
patent: 3831952 (1974-08-01), Geffroy

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