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. 08, 1981
Filed:
Feb. 22, 1980
Applicant:
Inventors:
Katsuo Kobari, Tachikawa, JP;
Yoshiaki Hachisuka, Hachioji, JP;
Assignee:
Fujitsu Fanuc Limited, Tokyo, JP;
Primary Examiner:
Int. Cl.
CPC ...
H02P / ;
U.S. Cl.
CPC ...
318398 ; 318327 ;
Abstract
A device for driving a DC motor with feedback control provides a circuit for judging whether the motor is in acceleration or in deceleration and a circuit for switching the gain modification signal, and said switch circuit is controlled by the output signals of said judgement circuit.