Is a
Patent attributes
Current Assignee
Patent Jurisdiction
Patent Number
Patent Inventor Names
Toshiaki Tsuzaki0
Chee Poh Chua0
Kazuaki Sato0
Masaaki Matsubara0
Mikio Umehara0
Osamu Furuta0
Date of Patent
September 18, 2007
Patent Application Number
11412999
Date Filed
April 28, 2006
Patent Primary Examiner
Patent abstract
A stepping motor for generating vibration is provided and includes a stator and a rotor. The rotor includes a shaft, a ring magnet and a rotor frame, and the rotor frame is formed into a substantial cup-shape including a disk portion having an opening at the center and also including a cylindrical portion continuously arranged at the periphery of the disk portion, and a weight portion is arranged in a portion of the rotor frame so that the gravity center of the rotor frame an be located at a position eccentric with respect to the center of the rotor frame.
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