US Patent 7629724 Axial air-gap electronic motor

Patent 7629724 was granted and assigned to Fujitsu on December, 2009 by the United States Patent and Trademark Office.

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Is a

Patent

Patent attributes

Current Assignee

Fujitsu

Patent Jurisdiction

United States Patent and Trademark Office

Patent Number

76297240

Patent Inventor Names

Toshiaki Tanno0

Tomonori Kojima0

Date of Patent

December 8, 2009

Patent Application Number

112849350

Date Filed

November 23, 2005

Patent Primary Examiner

‌

Quyen Leung

Patent abstract

An axial air-gap electronic motor is arranged such that a teeth surface of a stator and a magnet surface of a rotor are arranged opposedly with a predetermined gap therebetween along an axis line direction of an output shaft of the rotor. The rotor has a rotor back yoke arranged coaxially with the stator, and a rotor magnet installed to the rotor back yoke so as to face the teeth surface of the stator. The rotor magnet is provided with an anchor magnet which is integral with the rotor magnet and is arranged on a back surface side of the rotor back yoke.