Piston ring

Details Piston ring Piston ring

1985-05-21

1990-11-27

Shoap, Allan N.

Seal for a joint or juncture

Seal between relatively movable parts

Relatively rotatable radially extending sealing face member

277216, F16J 920, F16J 922

Patent

active

049730665

ABSTRACT:
A piston-and-ring assembly includes a piston having a circumferential groove which has an upper side wall and an opposite lower side wall; and a piston ring received in the groove and having opposite radial faces extending obliquely with respect to the side walls. The piston ring engages, with an axial bias, the upper and lower side walls with an annular marginal surface portion forming part of each radial face of the piston ring and extending substantially parallel to the side wall with which it is in engagement.

REFERENCES:
patent: 2177700 (1939-10-01), Fisher
patent: 2292042 (1942-08-01), Bowers
patent: 2459395 (1949-01-01), Smith
patent: 2798779 (1957-07-01), Swartz et al.
patent: 2970023 (1961-01-01), Thompson
patent: 3237953 (1966-03-01), Lucas
patent: 3618960 (1971-11-01), Koehler
patent: 3727927 (1973-04-01), Packard

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