Sealing and guide unit for pistons in general

Details Sealing and guide unit for pistons in general Sealing and guide unit for pistons in general

1983-04-18

1988-06-07

Ward, Robert S.

Seal for a joint or juncture

Seal between relatively movable parts

Relatively rotatable radially extending sealing face member

277168, F16J 1524, F16J 1556

Patent

active

047492023

ABSTRACT:
A sealing and guide unit for pistons comprising an energized elastic ring placed into a corresponding cavity or groove and a rigid antifriction ring fitted on said elastic ring and projecting at both its sides to cover the extended borders of said cavity or groove. The section of said-rigid ring being very small the radial thrust of said energized elastic ring produces a curvature in the direction of its cross section so that only the central portion of the ring will adhere with a limited friction to the inner surface of the piston chamber, while the lateral portions of the ring are supporting the lubricating effect.

REFERENCES:
patent: 2736164 (1956-02-01), Piquerez
patent: 3814445 (1974-06-01), Bitzan

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