Permanent magnet motor for driving a fan

Details Permanent magnet motor for driving a fan Permanent magnet motor for driving a fan

2005-09-13

2005-09-13

Nguyen, Tran (Department: 2834)

Electrical generator or motor structure

Dynamoelectric

Rotary

C310S156450, C417S423120

Reexamination Certificate

active

06943475

ABSTRACT:
A permanent magnet motor for driving a fan is rotated while a movement of the rotor in a direction of thrust of a rotary shaft with a rotation of the fan is prevented by magnetic attraction force of a permanent magnet and a stator core. A surface magnetic flux density of the permanent magnet facing the stator core is lower at an end portion than at a central portion of the permanent magnet in the direction of thrust of the rotary shaft.

REFERENCES:
patent: 3842300 (1974-10-01), Daykin et al
patent: 4015154 (1977-03-01), Tanaka et al.
patent: 4694210 (1987-09-01), Elliott et al.
patent: 5407283 (1995-04-01), Ohtsuka et al.
patent: 2-211043 (1990-08-01), None
patent: 8-70550 (1996-03-01), None
patent: 2001-231192 (2001-08-01), None

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