Small-sized motor

Details Small-sized motor Small-sized motor

2011-02-08

2011-02-08

Hanh, Nguyen N (Department: 2834)

Electrical generator or motor structure

Dynamoelectric

Rotary

C310S234000

Reexamination Certificate

active

07884510

ABSTRACT:
The present invention is used with a stopper mechanism for mechanically stopping the rotation of a motor. A pair of brushes is disposed such that a line which passes through the center of a rotor and connects the centers of the paired brushes is offset by a predetermined angle from a line which connects the centers of paired magnets. A commutator is disposed in such a manner as to be offset from a reference position by the same angle as the predetermined angle by which the paired brushes are offset. The predetermined angle falls within a range between an angle obtained by dividing 70° by the number of pairs of stator poles and an angle obtained by dividing 290° by the number of pairs of stator poles. Specifically, in the case of two stator poles, the predetermined angle falls within a range of 70° to 290° inclusive. In the case of four stator poles, the predetermined angle falls within a range of 35° to 145° inclusive.

REFERENCES:
patent: 4618794 (1986-10-01), Rampignon
patent: 2007/0152532 (2007-07-01), Roos et al.
patent: 62-230340 (1987-10-01), None
patent: 63-302751 (1988-12-01), None
patent: 2001-45731 (2001-02-01), None

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