Commutator for a motor and method of making the same

Details Commutator for a motor and method of making the same Commutator for a motor and method of making the same

1981-08-04

1984-01-17

Skudy, R.

Electrical generator or motor structure

Dynamoelectric

Rotary

29597, H02K 1300

Patent

active

044265948

ABSTRACT:
A commutator for a motor and a method of making the same wherein the motor has a stator and a rotor with a rotary shaft and the commutator consists of a plurality of commutator segments embedded in an insulating body, with each of the commutator segments having contact surfaces for engagement with a brush. The commutator is formed with a number of hemispherical shaped impressions so as to form a rough surface.
A method of manufacturing the commutator comprises embedding a plurality of commutator segments in a body made of insulating material and the step of forming hemispherical impressions in the commutator segments by directing a jet of particles onto the surfaces of the commutator segments with a predetermined pressure so as to provide the desired roughened surface.

REFERENCES:
patent: 1865523 (1932-07-01), Jeppson
patent: 2478536 (1949-08-01), Koonz
patent: 3996660 (1976-12-01), Hancock

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