Linear motor

Details Linear motor Linear motor

2007-02-21

2009-08-11

Leung, Quyen (Department: 2834)

Electrical generator or motor structure

Dynamoelectric

Linear

C310S015000, C310S013000, C310S014000

Reexamination Certificate

active

07573162

ABSTRACT:
A linear motor having a more preferable braking function is realized with a low cost. A linear motor has a slider and a stator. A driving winding is wound around the slider. A plurality of permanent magnets forming magnetic poles which invert at a predetermined period are provided on a surface of the slider opposing the stator. Teeth are formed on the stator with a predetermined spacing therebetween. The stator extends to a region outside of an effective movable range, and a braking winding is wound around the teeth in the extended portion. When the slider moves into a region outside of the effective movable range, an induced voltage is generated in the braking winding and a current flows. A thrust in a direction opposite to the movement direction of the slider is generated by the current.

REFERENCES:
patent: 6025659 (2000-02-01), Nashiki
patent: HEI 8-251904 (1996-09-01), None
patent: 9151048 (1997-06-01), None
patent: HEI 9-151048 (1997-06-01), None
patent: HEI 11-089208 (1999-03-01), None
patent: HEI 2005-137140 (2005-05-01), None

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