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:
Oct. 19, 2004
Filed:
Oct. 28, 2003
Hideki Morikaku, Tokyo, JP;
Yoshihito Asao, Tokyo, JP;
Mitsubishi Denki Kabushiki Kaisha, Tokyo, JP;
Abstract
Pole core members of a rotor are fitted on a rotary shaft with claw-shaped magnetic poles engaged with one another from front and rear sides. Each of magnet mounting members for holding magnets against side surfaces of each magnetic pole has magnet retaining portions on both sides and a platelike middle portion. Located between two adjacent claw-shaped magnetic poles, each magnet produces a magnetic field oriented in a direction opposite to the direction of a magnetic flux formed between the adjacent claw-shaped magnetic poles. The claw-shaped magnetic pole has a stopper portion at its extreme end on an inclined inside surface. The magnet mounting member carrying the magnets in the magnet retaining portions is mounted on each claw-shaped magnetic pole with the middle portion of the magnet mounting member situated against the inclined inside surface of the magnetic pole, and a backup ring is fitted inside the magnet mounting members.