Multi-stage hydraulic actuator

Details Multi-stage hydraulic actuator Multi-stage hydraulic actuator

1992-12-07

1993-09-28

Denion, Thomas E.

Expansible chamber devices

Mutually relatively movable cylinder or sleeve, member...

Cylinder or sleeve forms working member

92 53, 92 61, 92 62, 92 65, 91167R, 91173, 91181, F01B 720

Patent

active

052478726

ABSTRACT:
A multi-stage hydraulic actuator including a cylinder body having an outer cylinder and an inner cylinder provided in the outer cylinder, first and second pistons inserted in the outer cylinder to independently move and provided with first and second working members, and third and fourth pistons inserted in the inner cylinder to independently move and provided with third and fourth working members.

REFERENCES:
patent: 3511048 (1970-05-01), Nemetz
patent: 3610100 (1971-10-01), Hoffman
patent: 3934423 (1976-01-01), Haller
patent: 5111733 (1992-05-01), Baraniak

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