Servo operated valve assembly

Details Servo operated valve assembly Servo operated valve assembly

1990-07-31

1991-11-05

Rivell, John

Valves and valve actuation

Electrically actuated valve

Rotary electric actuator

251284, F16K 3104, F16K 5100

Patent

active

050626116

ABSTRACT:
A heater water valve has a servo actuator with a subfractional horsepower, low torque, high RPM motor operating on a 12 volt DC supply. A speed reducer provides rotation of an output sector gear. One travel limit position of the sector gear is provided by a resilient pad which is compressed by the sector gear to develop full motor stall torque in five degrees (5 degrees) of rotation of the sector gear, which rotates a shaft for opening and closing the heater water valve. The pad is preferably closed cell silicone foam.

REFERENCES:
patent: 4220900 (1980-09-01), Mintz
patent: 4645042 (1987-02-01), Inoue et al.
patent: 4678975 (1987-07-01), Vrabel et al.
patent: 4844110 (1989-07-01), Paley

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