Piston for use in pneumatically operated piston-cylinder apparat

Details Piston for use in pneumatically operated piston-cylinder apparat Piston for use in pneumatically operated piston-cylinder apparat

1979-12-04

1981-10-13

Cohen, Irwin C.

Expansible chamber devices

Piston

Side wall portion includes peripheral axially extending...

92251, F16J 908

Patent

active

042941644

ABSTRACT:
A piston for use in pneumatically operated piston-cylinder apparatus has a disc-shaped steel core for connection with a piston rod, a sealing ring of resilient material surrounding the core and having an integral sealing lip extending from each axial end an incomplete guide ring fitted around the sealing ring. The guide ring is formed of a graphite-filled plastics material and embraces a circumferential surface of the sealing ring to be axially fixed but radially resilient relative to the piston core.

REFERENCES:
patent: 1577732 (1926-03-01), Lamb
patent: 2402268 (1946-06-01), Young
patent: 3319537 (1967-05-01), Pittman
patent: 4205595 (1980-06-01), Hafner et al.

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