Pneumatic control valve system

Details Pneumatic control valve system Pneumatic control valve system

1993-01-22

1994-04-26

Michalsky, Gerald A.

Fluid handling

Systems

Supply and exhaust

60433, 1376275, 137636, 1376361, 298 22C, F15B 1304

Patent

active

053057821

ABSTRACT:
A pneumatic control valve system has a modulating valve and a piston. When the operator depresses the piston, pressure is communicated to a switching piston moving that piston to a switched position so that pressure is communicated to a switching outlet. The switching piston retains this switched position when the first piston is released. When the modulating valve is opened to communicate pressure to a work port, pressure is also communicated to the switching piston in order to move the switching piston back to its unswitched position whereat the switching outlet is vented. The switching piston allows the control of another function.

REFERENCES:
patent: 4682621 (1987-07-01), Kipling
patent: 4848404 (1989-07-01), Hickok

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