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:
Dec. 02, 1986
Filed:
Jul. 22, 1980
Applicant:
Inventor:
Ronald K Foster, Rockford, IL (US);
Assignee:
Warner Electric Brake & Clutch Company, South Beloit, IL (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H02K / ;
U.S. Cl.
CPC ...
310 / ; 310114 ;
Abstract
The rotor of a stepping motor includes two axially spaced sections each formed with radially projecting and angularly spaced teeth. The angular width of the teeth of one section is approximately the same as the angular width of the pole pieces of the stator of the motor and, as a result, the motor possesses good dynamic torque, good damping characteristics and a high response speed. The angular width of the teeth of the other rotor section is greater than the angular width of the teeth of the first section so as to cause the rotor to stop in a stable detent position and to improve the stepping accuracy of the motor.