Piston ring with expansive force responsive to pressure

Details Piston ring with expansive force responsive to pressure Piston ring with expansive force responsive to pressure

1975-01-02

1979-02-06

Smith, Robert I.

Seal for a joint or juncture

Seal between relatively movable parts

Relatively rotatable radially extending sealing face member

F16J 920

Patent

active

041381254

ABSTRACT:
The lower side of a piston ring slants downwardly in an outwardly direction at an acute angle to its upper side that is perpendicular to the wall of the piston. Spacings along the upper side and inward side of the ring permits conduction of gas for pressing downwardly and outwardly, respectively. According to the principle of an inclined plane, force downwardly on the lower inclined surface provides an outward component to act with the pressure at the inward side of the ring and with moderate expansive tension to counteract inward force from pressure on the outer surface of the ring.

REFERENCES:
patent: 1756905 (1930-04-01), Morton
patent: 1841772 (1932-01-01), Williams
patent: 2522764 (1950-09-01), Roberts
patent: 3554568 (1971-01-01), Heid, Jr.
patent: 3727927 (1973-04-01), Packard

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