Solenoid operated dual spool control valve

Details Solenoid operated dual spool control valve Solenoid operated dual spool control valve

1998-04-29

1999-07-13

Michalsky, Gerald A.

Fluid handling

Systems

Supply and exhaust

91455, 91464, F15B 13043

Patent

active

059212799

ABSTRACT:
A proportional hydraulic control valve assembly has a pair of bores in a valve body with separate control spools in each bore. A pair of force feedback, linear actuators are mounted on the same side of the valve body and each actuator controls the movement of a different one of the control spools. Only one of the control spools governs application of hydraulic power to a first work port of the valve assembly, while connecting a second work port to tank. Only the other control spool governs application of hydraulic power to the second work port of the valve assembly, while connecting a first work port to tank. The force feedback, linear actuators enable each spool to be received very tightly within the respective bore.

REFERENCES:
patent: 3587640 (1971-06-01), Hanser
patent: 3924656 (1975-12-01), Hanser et al.
patent: 4201116 (1980-05-01), Martin
patent: 4741364 (1988-05-01), Stoss et al.
patent: 4875501 (1989-10-01), Ichihashi et al.
patent: 5242149 (1993-09-01), Sikkema
patent: 5350152 (1994-09-01), Hutchison et al.
patent: 5568759 (1996-10-01), Aardema
patent: 5664477 (1997-09-01), Koehler

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