Electro-pneumatic pressure control system for welding and like apparatus
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United States of America Patent
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Dec 21, 1999
Grant Date -
N/A
app pub date -
Jul 24, 1998
filing date -
Jul 24, 1998
priority date (Note) -
Expired
status (Latency Note)
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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.
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