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. 12, 2005
Filed:
Feb. 20, 2003
Haruo Koharagi, Taga-gun, JP;
Masaharu Senoh, Narashino, JP;
Keiji Noma, Inba-gun, JP;
Kohei Ishii, Tokyo, JP;
Kazuo Sato, Sakura, JP;
Satoshi Kikuchi, Hitachi, JP;
Miyoshi Takahashi, Hitachi, JP;
Kouki Yamamoto, Hitachinaka, JP;
Haruo Koharagi, Taga-gun, JP;
Masaharu Senoh, Narashino, JP;
Keiji Noma, Inba-gun, JP;
Kohei Ishii, Tokyo, JP;
Kazuo Sato, Sakura, JP;
Satoshi Kikuchi, Hitachi, JP;
Miyoshi Takahashi, Hitachi, JP;
Kouki Yamamoto, Hitachinaka, JP;
Hitachi, Ltd., Tokyo, JP;
Abstract
An air conditioner comprising a compressor including a compression unit and a permanent magnet rotating electric machine, wherein the permanent magnet rotating electric machine includes a stator, into which concentratively wound armature windings are inserted in such a way as to surround a plurality of teeth formed in a stator core, and a rotor having permanent magnets accommodated into a plurality of permanent magnet inserting holes formed in a rotor core. Each pair of adjacent ones of said permanent magnets is arranged generally in one of a convex V-shaped configuration and a convex U-shaped configuration with respect to a rotor axis, and a substantially V-shaped recess portion is formed between adjacent poles in outer circumferential surface portions of the rotor core.