Field magnet for miniature motors

Details Field magnet for miniature motors Field magnet for miniature motors

1991-03-01

1993-04-27

Stephan, Steven L.

Electrical generator or motor structure

Dynamoelectric

Rotary

310 40MM, H02K 2126

Patent

active

052065561

ABSTRACT:
A field magnet for miniature motors of a type having a stator comprising a field magnet fixedly fitted to a motor housing, an end plate fitted to an open end of the motor housing; an a rotor comprising a rotor winding wound on a rotor core; electric current being fed to the rotor winding via a commutator making sliding contact with current feeding brushes that are held by brush holders fixedly fitted to the end plate; in which cogging during motor rotation is reduced to make motor rotation smooth by forming a magnet that has at the magnetic poles thereof higher maximum magnetic energy product than any other regions.

REFERENCES:
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patent: 4464595 (1984-08-01), Hamano et al.
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patent: 4973871 (1990-11-01), Bisantz
patent: 4994702 (1991-02-01), Arita
patent: 5004944 (1991-04-01), Fisher
patent: 5008578 (1991-04-01), Pace

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