Valves and valve actuation – Electrically actuated valve – Having means to produce digital pulses
Patent
1992-07-02
1993-01-12
Chambers, A. Michael
Valves and valve actuation
Electrically actuated valve
Having means to produce digital pulses
25112911, 25112912, F16K 3102
Patent
active
051783614
ABSTRACT:
An interface between the CPU and a motor for actuating a zero displacement alve as disclosed. First and second switches each having a normally closed pole sense the closed position of the valve when the normally closed pole of the first switch is open and the open condition of the valve when the normally closed pole of the second switch is open. A motor starter completes a power circuit to the motor when energized and a logic chip having a starter input is responsive to the switch positions and a starter input of a select polarity for energizing the motor starter when the normally closed pole of one of the switches is open and the other is closed and the motor actuator state is changed to an appropriate polarity.
REFERENCES:
patent: 3334859 (1967-08-01), Raymond, Jr.
patent: 4097786 (1978-06-01), Lund
patent: 4364111 (1982-12-01), Jocz
patent: 4499920 (1985-02-01), Steffan et al.
Gilbert Paul A.
Jobe Terry V.
McEwen Thomas V.
Chambers A. Michael
Hollis Darrell E.
The United States of America as represented by the Secretary of
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