Electric motor powered actuator

Details Electric motor powered actuator Electric motor powered actuator

1980-12-08

1983-07-12

Duggan, Donovan F.

Electrical generator or motor structure

Dynamoelectric

Rotary

310 83, 310 49R, 310156, H02K 706

Patent

active

043933190

ABSTRACT:
An electric motor powered actuator in which a shaft has a threaded connection with the rotor of an electric motor whereby rotation of the rotor causes axial translation of the shaft. The shaft is urged in one direction by a compression spring and the compression spring is interposed between the shaft and a spacer ring that engages one of the thrust bearings for the motor rotor. The compression spring has nonrotatable connections with the shaft and motor housing such that the torsional force of the spring prevents rotation of the shaft relative to the motor housing when the motor rotor is rotated.

REFERENCES:
patent: 2978621 (1961-04-01), Martinek
patent: 3159758 (1964-12-01), Hemperly, Jr. et al.
patent: 3660704 (1972-05-01), Paine

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