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, 2008
Filed:
Apr. 11, 2007
Toshiaki Ueda, Naka, JP;
Yoshimi Mori, Mito, JP;
Masaki Okamura, Hitachinaka, JP;
Sakae Ishida, Hitachinaka, JP;
Toshinori Watanabe, Hitachinaka, JP;
Toshiaki Ueda, Naka, JP;
Yoshimi Mori, Mito, JP;
Masaki Okamura, Hitachinaka, JP;
Sakae Ishida, Hitachinaka, JP;
Toshinori Watanabe, Hitachinaka, JP;
Hitachi, Ltd., Tokyo, JP;
Abstract
An electric rotating machine has a rotor having N and S poles and includes a stator with an annular stator core and slots. Multiple-phase stator windings are embedded in the slots, and are formed by winding continuous wires such that straight parts of the stator windings pressed in a flat shape are wound in rings around a grooved cylindrical member. The cylindrical member is inserted into a bore defined by the annular stator core so that the grooves of the cylindrical member are arranged opposite to the slots. The sets of the windings are folded back alternately outside the slots of the stator core and are wound so the sets of the windings are embedded alternately in the direction of the depth of the slots. Leading and trailing ends of the continuous wires are superposed after being wound at least one turn around the circumferentially arranged slots of the stator.