Servo hydraulic flow control valve assembly

Details Servo hydraulic flow control valve assembly Servo hydraulic flow control valve assembly

2006-04-18

2006-04-18

Hepperle, Stephen M. (Department: 3753)

Fluid handling

Systems

With flow control means for branched passages

C091S452000

Reexamination Certificate

active

07028714

ABSTRACT:
A servo hydraulic flow control valve assembly includes an oil distribution board having a first manifold defined therein near an inlet end of the oil distribution board and a second manifold defined in the oil distribution board near an outlet end of the oil distribution board. A relief valve is secured on the oil distribution board, and includes a body positioned on the oil distribution board and a rated control device mounted to the body for selectively opening the first manifold. A servo control device is secured on the oil distribution board. The servo control device includes a controller rotatably received in the oil distribution board and having a passage defined to communicate with the second manifold. A control unit is secured on the oil distribution board for driving the controller to control the pressure and the flow rate in the second manifold.

REFERENCES:
patent: 4345507 (1982-08-01), Simpson et al.
patent: 4500069 (1985-02-01), Barber et al.

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