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:
May. 15, 1979
Filed:
Apr. 13, 1978
Applicant:
Inventors:
Zenkichi Tsuchiya, Yokohama, JP;
Fujio Ishikawa, Yokohama, JP;
Assignee:
Toyo Denki Seizo Kabushiki Kaisha, Tokyo, JP;
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H02M / ; H02K / ;
U.S. Cl.
CPC ...
363157 ; 363170 ; 310160 ;
Abstract
A treble frequency converter comprising a stator and a synchronously rotating rotor. The stator is provided with a primary winding connectable to a polyphase alternating current source and a secondary winding from which treble frequency power can be taken, the secondary winding having three times as many poles as does the primary winding. The rotor has the same number of poles as does the primary winding and the rotor poles are shaped so that the air-gap between the stator and rotor poles will serve to produce third harmonic flux waves effectively and economically.