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:
Jan. 12, 2010
Filed:
Dec. 20, 2006
Takashi Okamoto, Yamanashi, JP;
Takuya Maeda, Yamanashi, JP;
Makoto Funakubo, Yamanashi, JP;
Takeshi Tamaki, Yamanashi, JP;
Takashi Okamoto, Yamanashi, JP;
Takuya Maeda, Yamanashi, JP;
Makoto Funakubo, Yamanashi, JP;
Takeshi Tamaki, Yamanashi, JP;
Fanuc Ltd, Yamanashi, JP;
Abstract
A rotor of an electric motor, including a rotor core having a plurality of magnet-retaining apertures, a plurality of permanent magnets individually received and retained in the magnet-retaining apertures of the rotor core, and a resinous filler filling a gap defined between each magnet-retaining aperture and each permanent magnet and fixing the permanent magnets to the magnet-retaining apertures. The rotor also includes an engaging projection provided in the rotor core, the engaging projection tightly engaged with each of the permanent magnets received in the magnet-retaining apertures and temporarily holding each permanent magnet at a predetermined position in a corresponding magnet-retaining aperture, in an unfinished state of the rotor where the resinous filler is not arranged in the gap.