Molded commutator with a layer of insulation on the base

Details Molded commutator with a layer of insulation on the base Molded commutator with a layer of insulation on the base

1989-10-05

1991-03-26

Stephan, Steven L.

Electrical generator or motor structure

Dynamoelectric

Rotary

310 45, 310233, 310236, H02K 1304, H02K 1512, H01R 3916, H01R 3904

Patent

active

050032127

ABSTRACT:
An improved commutator for an electric motor and a method of making the same wherein the outer surface of a commutator sleeve molded of a synthetic resin is coated with an insulating coating layer of an electrically insulating coating material. The molded commutator sleeve thus coated is protected from oxidative degradation and cracking which would otherwise result in removal of a commutator bar and insulation failure.

REFERENCES:
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patent: 2674784 (1954-04-01), Roberts et al.
patent: 3103060 (1963-09-01), Fay
patent: 3168868 (1965-02-01), Schultz
patent: 3171999 (1965-03-01), Kemp
patent: 3471731 (1969-10-01), Pratt et al.
patent: 3473062 (1969-10-01), Forste et al.
patent: 3473063 (1969-10-01), Forste et al.
patent: 3777367 (1973-12-01), Kalagidis
patent: 4071796 (1978-01-01), Nippert
patent: 4562369 (1985-12-01), Gerlach et al.
patent: 4868440 (1989-09-01), Gerlach et al.

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