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. 23, 1999
Filed:
Jan. 29, 1997
Yuji Enomoto, Yokohama, JP;
Noriaki Yamamoto, Yokohama, JP;
Yukinori Taneda, Yokohama, JP;
Hiromichi Hiramatsu, Yokohama, JP;
Hitachi, Ltd., Tokyo, JP;
Abstract
The present invention is characterized in that a rotary machine attempts to lower the resistance of each coil and realize improvement of efficiency and miniaturization of a motor by shortening the end portion of a coil to be inserted into a stator, and the constitution thereof is that the coil end portion of a stator coil has a shape that a conductor raised and looped back from a slot provided in the core on the rotor side is closer to the end face of the aforementioned core than a conductor raised and looped back in the aforementioned slot on the opposite side of the rotor, and the aforementioned constitution has a stator coil having a loopback shape passing a location other than above the adjacent slot surface. The present invention is also a method for manufacturing a rotary machine characterized in that the coil end portion of a stator coil is held horizontally by a holding member, and the holding member is rotated by finely moving the rotational center from the rotor side to the opposite side of the rotor with the slot insertion portion provided in the core restricted, and the aforementioned coil end portion is formed in the loopback shape.