Motor-driven control device for a valve-actuating spindle

Details Motor-driven control device for a valve-actuating spindle Motor-driven control device for a valve-actuating spindle

1976-04-08

1977-09-20

Schaefer, Robert K.

Electricity: motive power systems

Automatic and/or with time-delay means

Movement, position, or limit-of-travel

200 6139, G05D 300

Patent

active

040500004

ABSTRACT:
The control device comprises an electric motor whose rotor drives a rotary spindle which shifts the closure member of a valve. Means are provided for detecting the stoppage of the rotation of the spindle. Switching means for opening the supply circuit of the motor are responsive to the detecting means so as to stop the supply when the spindle stops rotating.

REFERENCES:
patent: 2687047 (1954-08-01), O'Connor
patent: 3219902 (1965-11-01), Sibley
patent: 3308406 (1967-03-01), Barnhart

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