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. 28, 1978
Filed:
Jul. 20, 1976
Applicant:
Inventors:
Akira Nikami, Yokohama, JA;
Choei Kuriki, Tokyo, JA;
Assignee:
Sony Corporation, Tokyo, JA;
Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
H02P / ;
U.S. Cl.
CPC ...
318318 ; 318398 ;
Abstract
A DC motor control circuit is provided with a starter circuit responsive to the frequency of a rotational signal derived from a signal generator attached to the DC motor. The starter circuit includes a monostable multivibrator which ceases to operate when the frequency of the rotational signal exceeds a predetermined frequency.