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:
Jun. 12, 2001
Filed:
Jun. 09, 1999
Applicant:
Inventors:
Yukinobu Kujira, Toyohashi, JP;
Seiji Tateishi, Kosai, JP;
Assignee:
ASMO Co., Ltd., Shizuoka-ken, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H02K 2/904 ;
U.S. Cl.
CPC ...
H02K 2/904 ;
Abstract
A driving apparatus of a stepping motor has a simplified circuit structure and a bipolar driving system. The stepping motor has two exciting coils, which are driven by respective bridge circuits. Transistors provided respectively on two sides of one of the bridge circuits are commonly used by both of the bridge circuits. Accordingly, the driving circuit is formed with a reduced number of transistors.