Servo multiplexing system

Details Servo multiplexing system Servo multiplexing system

1994-09-23

1996-08-20

Michalsky, Gerald A.

Fluid handling

Systems

Multi-way valve unit

91524, 91529, 13759615, 13759616, F15B 1306

Patent

active

055469884

ABSTRACT:
Fluidic control of a number of remote functions is achieved by a single servo controlled linearly actuated distribution valve (29) in conjunction with a like number of bistable hydraulically actuable holding relays (17,19,21) the individual states of which are controlled by the distribution valve. Each holding relay supplies one of two pneumatic signals to an associated remote device (11,13,15). Holding relay or distribution valve motion is only required when a change in a remote function is required. The distribution valve is also adapted to provide a fail-safe signal (79) to all remote devices simultaneously to set the individual remote functions to a desired safe condition.

REFERENCES:
patent: 3070295 (1962-12-01), Glatti
patent: 3533446 (1970-10-01), Kirk
patent: 3578025 (1971-05-01), Furrer
patent: 4622998 (1986-11-01), Kussel et al.
patent: 4848404 (1989-07-01), Hickok
patent: 5048394 (1991-09-01), McLevige et al.
patent: 5056600 (1991-10-01), Surjaatmadja et al.

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