Linear actuator

Details Linear actuator Linear actuator

1989-07-24

1991-04-16

Look, Edward K.

Expansible chamber devices

Relatively movable working members

First working member moves second coaxial working member...

92130R, 92165R, 92151, 251 635, F01B 700

Patent

active

050073281

ABSTRACT:
A linear actuator with a pair of in-line piston-cylinder combinations, separated by a partition. The combinations are supplied from a common source of fluid under pressure through a single inlet port. A guide pin prevents the uppermost piston from cooking, and serves as an upper limit stop. The pistons are biased into abutment with one another.

REFERENCES:
patent: 3430539 (1969-03-01), Freeman
patent: 3752040 (1973-08-01), Pawloski et al.
patent: 3880051 (1975-04-01), Eppler
patent: 4525183 (1985-06-01), Cordes et al.
patent: 4585207 (1986-04-01), Shelton
patent: 4776562 (1988-10-01), Kalaskie et al.
patent: 4828219 (1989-05-01), Ohmi et al.
patent: 4840347 (1989-06-01), Ariizumi et al.

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