Dynamoelectric machine with brush having slanted core

Details Dynamoelectric machine with brush having slanted core Dynamoelectric machine with brush having slanted core

H - Electricity

02

K

H02K 13/10 (2006.01) H01R 39/18 (2006.01) H02K 13/00 (2006.01)

Patent

CA 2142432

Core-type brushes used in dynamoelectric machines, such as electric motors, have cores which are arranged in substantially parallel planes extending at an angle with respect to the direction at which the brushes move toward the commutator as the brushes wear. As the brushes wear, the position of the cores relative to the outer surface of the commutator changes, preventing constant positioning of the cores relative to the commutator surface and reducing or preventing non-uniform commutator wear which occurs when the cores maintain a fixed position with respect to the commutator surface as the brushes wear. This arrangement of the cores eliminates the need to resurface the commutator at brush change, reduces the time required to properly seat the brushes to the commutator and increases commutator and brush life.

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