Direct-current dynamo electric machine, and method of manufactur

Details Direct-current dynamo electric machine, and method of manufactur Direct-current dynamo electric machine, and method of manufactur

1987-01-16

1988-11-01

Salce, Patrick R.

Electrical generator or motor structure

Dynamoelectric

Rotary

29605, 310208, 336205, 427185, H02K 1510

Patent

active

047822546

ABSTRACT:
The commutating poles of vehicular-type d-c motors, for example for trolley buses or trolley cars, are made by winding, on edge, a copper strip, permitting the wound copper strip to resiliently, spring-like expand so that the individual spiral loops thereof will be slightly spaced from each other, and then exposing the copper strip in a fluidized bed to an insulating powder, for example polyethylene or polyurethane, which is subsequently cured in a hardening or sintering process.

REFERENCES:
patent: 975425 (1910-11-01), Hensley
patent: 2061388 (1936-11-01), Schou
patent: 3244918 (1966-04-01), Pennell et al.
patent: 3333131 (1967-07-01), Bush et al.
patent: 3877142 (1975-04-01), Hamano et al.
patent: 4471247 (1984-09-01), Cotton
patent: 4651039 (1987-03-01), Yamamoto

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