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. 07, 2009
Filed:
Dec. 12, 2005
Takashi Yasuhara, Yotsukaido, JP;
Takayuki Koizumi, Hitachinaka, JP;
Ryozo Takeuchi, Hitachi, JP;
Koji Obata, Hitachi, JP;
Hidemitsu Kobayashi, Naka, JP;
Takashi Yasuhara, Yotsukaido, JP;
Takayuki Koizumi, Hitachinaka, JP;
Ryozo Takeuchi, Hitachi, JP;
Koji Obata, Hitachi, JP;
Hidemitsu Kobayashi, Naka, JP;
Hitachi, Ltd., Tokyo, JP;
Abstract
A stator coil is configured of a first group of six turns of conductive wire, and a second group also of six turns, with the first group of six turns being wound on a spool, leaving a gap the same as the diameter of the conductive wire between winds. Upon completion of winding the first group, the winding is turned back, and the second group of six turns is wound in the gap, so as to be adjacent to the turns of the first group. The article is then inserted into a slot in a stator core of a stator, thereby configuring a stator coil. This provides for a rotating electrical machine and manufacturing method thereof with improved insulation resistivity regarding inverter surge voltage, and moreover high output can be obtained with a machine of comparable external dimensions with conventional machines.