Process of making a dynamo electric machine

Details Process of making a dynamo electric machine Process of making a dynamo electric machine

1985-04-19

1987-07-28

Echols, Percy W.

Metal working

Method of mechanical manufacture

Electrical device making

29605, H02K 1502

Patent

active

046824103

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.

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patent: 3877142 (1975-04-01), Hamano et al.
patent: 3928779 (1978-12-01), Zwarq et al.

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