Double actuator control valve that has a neutral position

Details Double actuator control valve that has a neutral position Double actuator control valve that has a neutral position

1997-03-28

2000-08-22

Michalsky, Gerald A.

Fluid handling

Systems

Multi-way valve unit

2511291, F15B 13044

Patent

active

061056162

ABSTRACT:
A three position digitally latched actuator actuated fluid control valve. The control valve includes a housing which has a cylinder port, a supply port and a return port. The control valve also contains an internal valve that moves between a first position, a second position and a neutral position. In the first position the internal valve provides fluid communication between the cylinder port and the supply port. In the second position the valve provides fluid communication between the cylinder port and the return port. In the neutral position the valve prevents fluid communication between the ports. The control valve has a first actuator and a second actuator that are actuated by digital pulses to move the internal valve between the first, second and neutral positions. The control valve may have a pair of springs that bias the internal valve to the neutral position, wherein the actuator can be actuated to latch the valve into the first position and the second actuator can be actuated to latch the valve into the second position.

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patent: 5640987 (1997-06-01), Sturman
patent: 5829396 (1998-11-01), Sturman et al.

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