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:
Mar. 23, 1976
Filed:
Jul. 08, 1974
Applicant:
Inventor:
Kinji Tanikoshi, Kawasaki, JA;
Assignees:
Canon Kabushiki Kaisha, Tokyo, JA;
Canon Seiki Kabushiki Kaisha, Tokyo, JA;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H02K / ;
U.S. Cl.
CPC ...
318138 ; 318254 ; 318289 ; 318290 ;
Abstract
A driving system for reversibly rotating a D.C. brushless motor is disclosed. The system comprises Hall generators for detecting positions of a rotor, and a drive circuit for controlling conduction and interruption of current applied to stator windings making use of output of said Hall generators. The system further comprises an inversion control circuit including a switch for reversibly switching polarities of an applied power source in order to reversibly rotate the D.C. motor thereby reversibly inverting the D.C. motor in response to signals from the power source whose polarities vary alternately.