Telescoping fluid actuator

Details Telescoping fluid actuator Telescoping fluid actuator

1993-02-25

1994-06-21

Denion, Thomas E.

Expansible chamber devices

Mutually relatively movable cylinder or sleeve, member...

Cylinder or sleeve forms working member

92 53, 92113, 91167R, 91169, 91181, F01B 720

Patent

active

053220048

ABSTRACT:
A telescoping fluid actuator assembly including a housing having a plurality of concentrically disposed fluid actuators disposed therein. Each fluid actuator includes a cylindrical housing enclosing a piston and piston rod. Fluid passage means is provided for alternately directing fluid pressure to the front and back piston faces of each piston to effect forward and rearward movement of the pistons and the associated piston rod. The innermost concentric fluid actuator has a piston rod extending from the housing for engaging a workpiece for movement thereof. All of the concentrically mounted fluid actuators, except the innermost fluid actuator, is provided with a hollow piston rod which forms the cylinder housing for adjacent concentric fluid actuators.

REFERENCES:
patent: 3128674 (1964-04-01), Ganchar et al.
patent: 3272132 (1966-09-01), Stoelting et al.
patent: 3920084 (1975-11-01), Russell, Jr.
patent: 3957125 (1976-05-01), Russell, Jr.
patent: 3973468 (1986-08-01), Russell, Jr.

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