Double acting fluid operated piston cylinder assembly

Details Double acting fluid operated piston cylinder assembly Double acting fluid operated piston cylinder assembly

1977-05-18

1979-02-06

Cohen, Irwin C.

Expansible chamber devices

With releasable stop or latch means to prevent movement of...

Means includes element interfitting between working member...

92 27, 92 88, F15B 1526

Patent

active

041378270

ABSTRACT:
An elongated cylinder housing has a piston therein molded from a resinous plastic material. The piston has an angularly extending slot receiving a metal clutch roller operated by a clutch control bar slidable relative to the piston. The clutch control bar is secured to a secondary piston member, and springs are disposed between the piston and the secondary piston member for normally causing the control bar to pull the clutch roller into an engaged position. The clutch roller is disposed in such engaged position to prevent travel of the piston in one direction except when actuating fluid in the cylinder operates on the secondary piston member against the force of the springs to cause the clutch roller to move the clutch control bar into a released position. The bottom of the slot that receives the clutch roller is covered by metal plates to permit free rolling engagement of the clutch roller thereon and at the same time to prevent indentation of the clutch roller into the plastic. The roller support plates are retained in the slot by interfitting projections and notches.

REFERENCES:
patent: 2486615 (1949-11-01), Schreiber
patent: 3205020 (1965-09-01), Schubert
patent: 3221610 (1965-12-01), King et al.
patent: 3893378 (1975-07-01), Hewitt
patent: 3918351 (1975-11-01), Finke

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