Linear actuator

Details Linear actuator Linear actuator

1995-09-29

1997-04-08

Denion, Thomas E.

Expansible chamber devices

Moving cylinder

92 5R, 92 135, 92 137, 92165R, 92138, F01B 1502

Patent

active

056177720

ABSTRACT:
A linear actuator has an actuator body having a through hole defined axially therein and an opening defined in an upper surface thereof, a pair of end blocks, a slide table reciprocally movable in the directions indicated by the arrows X, Y, a pair of cylindrical members coupled to the end blocks, respectively, and having respective passages communicating with fluid outlet/inlet ports, respectively, defined in the actuator body, a joint member movable in unison with the slide table, a pair of cover members held in surface-to-surface contact with the joint member in confronting relation to each other and hermetically surrounding outer circumferential surfaces of the cylindrical members, for sliding displacement in unison with the slide table, and a pair of pressure chambers defined by the cylindrical members and the cover members and closed by the cover members, the pressure chambers communicating with passages in the cylindrical members.

REFERENCES:
patent: 3152520 (1964-10-01), Heese
patent: 4141432 (1979-02-01), Presley
patent: 4403389 (1983-09-01), Coope
patent: 5305682 (1994-04-01), Kaweko
patent: 5305683 (1994-04-01), Gospowski et al.
patent: 5330272 (1994-07-01), Stoll
patent: 5335583 (1994-08-01), Kaweko et al.
patent: 5415437 (1995-05-01), Asou et al.

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