Actuator controller

Details Actuator controller Actuator controller

2011-05-24

2011-05-24

Leslie, Michael (Department: 3745)

Motors: expansible chamber type

With motive fluid valve

Relatively movable serial valves

C091S186000

Reexamination Certificate

active

07946215

ABSTRACT:
Actuator controller comprising a body (12) with an inlet port (14) coupled to a source of pressurized fluid and in flow communication with primary and secondary spool bores (16, 20); primary and secondary spools (60, 62); first and second cross flow ports (48, 52) communicating said primary and secondary spool bores, compression and expansion outlet ports (53, 54) for applying pressurized fluid to a return-biased actuator (110); and a venting outlet port (23); wherein return action of the working piston of the actuator is facilitated with aid of pressurized fluid already gained in the system.

REFERENCES:
patent: 2916050 (1959-12-01), Ruhl
patent: 3971296 (1976-07-01), Tugwell
patent: 4221155 (1980-09-01), Ongaro
patent: 6772791 (2004-08-01), Neff
patent: 1 363 054 (2003-11-01), None
patent: 1 373 070 (1974-11-01), None
patent: 2 227 295 (1990-07-01), None

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