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:
Jul. 27, 2004
Filed:
Dec. 26, 2002
Applicant:
Inventors:
Koichiro Kamei, Tokyo, JP;
Takehiro Kobayashi, Tokyo, JP;
Assignee:
Mitsubishi Denki Kabushiki Kaisha, Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H02K 1/700 ;
U.S. Cl.
CPC ...
H02K 1/700 ;
Abstract
A rotating-electric machine for use in engine starter capable of improving power by reducing inductance of coil is provided. An armature is provided inside a stator, and when an armature winding is inserted into a slot provided in the armature , the armature winding is formed into a wave winding and a short-pitch winding. In case that number of poles 2p=6 and number of slots Ns=23, the armature winding are inserted into 1st to 4th slots, and a back pitch yb is established to be 3, whereby a short-pitch degree &dgr;(=|Ns/2p−yb|) is 0.83 and an expression of 0.5<&dgr;<1 is satisfied.