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:
May. 18, 1999
Filed:
Sep. 11, 1996
Applicant:
Inventors:
Michiya Hiramoto, Atsugi, JP;
Hiroyuki Simizu, Atsugi, JP;
Assignee:
Unisia Jecs Corporation, Atsugi, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H02P / ;
U.S. Cl.
CPC ...
318696 ; 318599 ; 363 41 ;
Abstract
A method of driving a stepping motor comprises providing a chopping signal to a drive current of the stepping motor when a chopping condition is on, and synchronizing output of the chopping signal with output of a drive signal for driving stepwise the stepping motor.