The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jul. 12, 1983
Filed:
Dec. 08, 1980
Applicant:
Inventor:
Gustavus P Bock, Bellbrook, OH (US);
Assignee:
General Motors Corporation, Detroit, MI (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H02K / ;
U.S. Cl.
CPC ...
310 80 ; 310 83 ; 310 / ; 310156 ;
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.