Geared air actuator

Details Geared air actuator Geared air actuator

1989-12-28

1991-04-02

Ostrager, Allen M.

Expansible chamber devices

With separate biasing means for working member

Tension spring

92 5R, 92136, F01B 3100, F01B 900

Patent

active

050038648

ABSTRACT:
A geared air actuator comprising a piston mounted for movement within a housing. The piston has a front wall and a hollow body portion which extends rearwardly from the front wall. A spring is mounted within the hollow body portion of said piston. When pneumatic fluid is introduced into the housing and against the front of the piston, it moves the piston back against the action of the spring. When the introduction of pneumatic fluid is terminated the spring will move the piston back to its original position. The front wall of the piston is substantially thinner than the length of the body portion.

REFERENCES:
patent: 1734155 (1929-11-01), Caminez
patent: 2090342 (1937-08-01), Callsen
patent: 2408338 (1946-09-01), Parsons
patent: 2844128 (1958-07-01), Steiner
patent: 3054136 (1962-09-01), Schlage et al.
patent: 3246581 (1966-04-01), Carr
patent: 3614913 (1971-10-01), Clark
patent: 4665583 (1987-05-01), Frolov et al.

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