Valve actuator with manual disengagement assembly

Details Valve actuator with manual disengagement assembly Valve actuator with manual disengagement assembly

1986-02-24

1987-03-03

Rosenthal, Arnold

Valves and valve actuation

Electrically actuated valve

With nonelectrical actuator

25112912, F16K 3105

Patent

active

046470077

ABSTRACT:
An automatic valve operator provides manual override for selective manual and powered displacement of a valve. The valve operator includes a drive motor, a transmission assembly, and an axially shiftable coupling shaft for selective engagement or disengagement from the transmission assembly. Shifting the coupling shaft displaces electrical switches which substantially simultaneous de-energizing of the valve operator drive motor. The coupling shaft is maintained operatively in connection to the valve, during the axial shifting thereby permitting manual displacement of the valve independent of the transmission and motor. Adjustable limit switch actuating collars and a reversible electrical connector assembly also are disclosed.

REFERENCES:
patent: 2550906 (1951-05-01), Britton
patent: 3938553 (1976-02-01), Ortega
patent: 4169491 (1979-10-01), Bajka
patent: 4398562 (1983-08-01), Saarem et al.
patent: 4470429 (1984-09-01), Johnson
patent: 4538789 (1985-09-01), An
patent: 4541609 (1985-09-01), Smith

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