Motor

Details Motor Motor

2008-03-19

2010-06-08

Lam, Thanh (Department: 2834)

Electrical generator or motor structure

Dynamoelectric

Rotary

C310S090000

Reexamination Certificate

active

07732956

ABSTRACT:
A motor includes a shaft that serves as a rotation center when a rotor is rotated with respect to a stator, a bearing that supports the shaft in a circumferential direction of the shaft, a thrust bearing that supports one end of the shaft in a thrust direction of the shaft, a magnet that is fixed to the rotor and alternately magnetized to different poles in a rotational direction of the shaft, a core that is fixed to the stator and disposed to face the magnet in a radial direction of the shaft, a coil that are wound around the core, and a magnetic shield that shields leakage flux leaking from the magnet to the coil. A magnetic center of the core is offset from a magnetic center of the magnet in the thrust direction, so that the shaft is attracted to the thrust bearing.

REFERENCES:
patent: 5357162 (1994-10-01), Aiyoshizawa et al.
patent: 6443716 (2002-09-01), Yoshioka
patent: 6774520 (2004-08-01), Wauke
patent: 2002/0089246 (2002-07-01), Wauke
patent: 2002/0117910 (2002-08-01), Wauke
patent: 2003/0197436 (2003-10-01), Takahashi
patent: 2005/0264121 (2005-12-01), Yajima et al.
patent: 2006/0103248 (2006-05-01), Tamaoka
patent: 2006/0197395 (2006-09-01), Iguchi
patent: 11-252878 (1999-09-01), None

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