Electro-pneumatic pressure control system for welding and like a

Details Electro-pneumatic pressure control system for welding and like a Electro-pneumatic pressure control system for welding and like a

1998-07-24

1999-12-21

Nguyen, Hoang

Motors: expansible chamber type

With motive fluid valve

Electrically operated

91465, F15B 13044, F15B 1108

Patent

active

060034289

ABSTRACT:
An electro-pneumatic control system pneumatically connected to a pressure source and electrically connected to an electrical signal source includes a selector switch having an electrical input connected to the electrical signal source, and having a first electrical output and a second electrical output. The system further includes a body having a movable member positioned therein, wherein the body has a first port and a second port; a first regulator valve having a bidirectional port connected to the first port of the body, having an input port connected to the pressure source, having an exhaust port, and having an electrical actuator connected to the first electrical output of the selector switch; and a second regulator valve having a bidirectional port connected to the second port of the body, having an input port connected to the pressure source, having an exhaust port, and having an electrical actuator connected to the second electrical output of the selector switch.

REFERENCES:
patent: 4444090 (1984-04-01), Joelson
patent: 4628499 (1986-12-01), Hammett
patent: 4813339 (1989-03-01), Uno et al.
patent: 4932311 (1990-06-01), Mibu et al.
patent: 5287699 (1994-02-01), Takamura et al.
patent: 5497805 (1996-03-01), Sunamura et al.
patent: 5542336 (1996-08-01), Larkin
SMC Electro-Pneumatic Regulator E-P HYREG, Series VY Catalog, Cat. E 136-A, 1995.
SMC ISO Interface Solenoid Valve, Series VSR8/VSS8, Cat. E '140-B, 1995.

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