Spring return electric actuator

Details Spring return electric actuator Spring return electric actuator

1994-08-12

1996-05-21

Marmor, Charles A.

Planetary gear transmission systems or components

Electric or magnetic drive or control

475302, 475312, 475343, 25112911, F16K 3102, F16H 2702, F16H 3704

Patent

active

055184626

ABSTRACT:
A rotary actuator for opening and closing a valve, damper or linkage for industrial application, the actuator including a housing having a motor mounted thereon for driving a speed reduction gear train to reduce the speed of the motor, the rotary motion of the output shaft of the speed reduction gearing to linear motion against the force of a biasing spring to convert the linear motion of the converting motion to rotary motion of the output shaft.

REFERENCES:
patent: 4595081 (1986-06-01), Parsons
patent: 4613798 (1986-09-01), Baumann
patent: 4621789 (1986-11-01), Fukamachi
patent: 4742989 (1988-05-01), Akagi
patent: 4754949 (1988-07-01), Fukamachi
patent: 4770390 (1988-09-01), Tratz et al.
patent: 5131623 (1992-07-01), Giordani
patent: 5160115 (1992-11-01), Ito et al.
patent: 5195721 (1993-03-01), Akkerman
patent: 5345835 (1994-09-01), Schabert et al.

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