Position sensor for a rotary valve

Details Position sensor for a rotary valve Position sensor for a rotary valve

1989-12-26

1990-09-18

Rosenthal, Arnold

Valves and valve actuation

Electrically actuated valve

Rotary electric actuator

25112911, 25112904, 25112905, F16K 3104

Patent

active

049572741

ABSTRACT:
A position of a rotary valve having limited motion between an open and a closed position is determined by a limit sensor. A stepper motor supplies power to open and close the rotary valve. A coupling transmits any stepper motor motion to the rotary valve. A sensor actuator is affixed to the coupling. A limit sensor determines the position of the rotary valve by sensing the position of the sensor actuator, wherein there is no contact between the sensor actuator and the limit switch when the position of the rotary valve is being determined.

REFERENCES:
patent: 3839662 (1974-10-01), N'Guyen Van
patent: 3870274 (1975-03-01), Broe
patent: 4205783 (1980-06-01), Dietsche
patent: 4364111 (1982-12-01), Jocz
patent: 4556169 (1985-12-01), Zervos
patent: 4690168 (1987-09-01), Kihm
patent: 4850319 (1989-07-01), Imoehl
patent: 4875623 (1989-10-01), Garris

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