Stepping motor for generating vibration
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United States of America Patent
Stats
-
Sep 18, 2007
Grant Date -
Nov 30, 2006
app pub date -
Apr 28, 2006
filing date -
May 27, 2005
priority date (Note) -
Expired
status (Latency Note)
Importance
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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