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. 01, 1987
Filed:
Jul. 03, 1986
Applicant:
Inventors:
Bruce A Reid, Elmira, CA;
John R Deline, Kitchener, CA;
Assignee:
NCR Corporation, Dayton, OH (US);
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G05B / ;
U.S. Cl.
CPC ...
318685 ; 318696 ;
Abstract
A system and method for operating a stepping motor in start, run, and stop modes of operation. After the stepping motor is accelerated in the start mode, it is operated in the run mode by energizing the windings with a lead angle of two steps in one embodiment and by energizing the windings with a lead angle of two and one quarter steps in a second embodiment.