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:
Nov. 09, 1976
Filed:
Dec. 27, 1974
Applicant:
Inventors:
Edward G Reehil, Henrietta, NY (US);
Edward L Steiner, Macedon, NY (US);
Assignee:
Xerox Corporation, Stamford, CT (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H02K / ;
U.S. Cl.
CPC ...
318696 ;
Abstract
A feed control apparatus employing a control circuit for accurately positioning the shaft of a multiphase stepper motor by selective energization of respective phases of the motor under the influence of a low duty cycle power supply and a one way clutching mechanism thereby accurately positioning the motor in a proper angular position such that normal energization of the motor phase coils will result in the desired motor drive direction.