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:
Apr. 05, 1994
Filed:
Aug. 21, 1992
Applicant:
Inventors:
John C Bucher, Coral Springs, FL (US);
Shih T Wu, Lighthouse Point, FL (US);
Ta-Yao Tao, Taipei, TW;
Assignee:
Chien Luen Industries Company, Ltd., Inc., Ft. Lauderdale, FL (US);
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H02P / ;
U.S. Cl.
CPC ...
318794 ; 318779 ; 318778 ; 318795 ; 318817 ;
Abstract
An induction motor speed control apparatus and method wherein various capacitors are switched in series with the auxiliary winding of an induction motor and, during such switching, the power source is disconnected from the main and auxiliary windings and the in-use capacitors are momentarily connected to the main winding to form a closed-loop discharge path through the main and auxiliary windings.