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. 18, 1985
Filed:
Jan. 03, 1983
Applicant:
Inventors:
Hiroshi Nagase, Hitachi, JP;
Toshiaki Okuyama, Toukai, JP;
Assignee:
Hitachi, Ltd., Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H02P / ;
U.S. Cl.
CPC ...
318808 ; 318801 ;
Abstract
An induction motor is driven by a converter which outputs a variable frequency and variable phase A.C. voltage. The frequency is instructed by a signal which corresponds to a difference between a detected speed signal and set speed signal, a signal which corresponds to a difference between a detected magnetic flux intensity signal and set flux signal, and the detected speed signal.
Nagase, Hiroshi. (1985). Method and apparatus of controlling induction motors (U.S. Patent No. 4524310). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/4524310
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile