Piston ring

Details Piston ring Piston ring

1976-08-05

1977-09-20

Cohen, Irwin C.

Expansible chamber devices

Piston

With spring means for biasing side wall portion radially

92250, 92255, 92258, F16J 106

Patent

active

040489094

ABSTRACT:
A piston ring having a general shape of a cylinder with the first section in the shape of an annulus for engaging a portion of the surface of a piston to provide a fluid-tight seal with the piston and a second section in the shape of a thin-walled bowl with sealing means on the outer surface of the bowl for providing a fluid-tight seal between the ring and the cylinder wall. The ring is especially constructed for use at cryogenic temperatures of -320.degree. F and below.

REFERENCES:
patent: 353211 (1886-11-01), Dudley
patent: 1728591 (1929-09-01), Brauer
patent: 1945152 (1934-01-01), Marsh
patent: 1945524 (1934-02-01), Foehr
patent: 2430492 (1947-11-01), Carlson
patent: 2815992 (1957-12-01), Rodgers

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