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. 04, 2003
Filed:
Mar. 09, 2001
Applicant:
Inventors:
Assignee:
Hitachi, Ltd., Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H02K 1/100 ; H02K 3/46 ;
U.S. Cl.
CPC ...
H02K 1/100 ; H02K 3/46 ;
Abstract
An electric rotating machine includes a stator, a rotor core which can rotate inside the stator with a clearance between the rotor core and the inner surface of the stator, a stator winding formed around the rotor core, and a rotor having feeding lead wires connected to the rotor winding by a joint conductor. The feeding lead wire includes a first part connected to the joint conductor, a second part thinner than the first part, and a third part which is formed between the first and second parts and has a thickness changing from the thickness of the first part to the thickness of the second part. The first part also has through-holes to pass a cooling medium.