Electrical generator or motor structure – Dynamoelectric – Rotary
Patent
1977-09-26
1980-06-24
Duggan, Donovan F.
Electrical generator or motor structure
Dynamoelectric
Rotary
310 89, 310239, H02K 720
Patent
active
042097231
ABSTRACT:
The invention pertains to electric motor apparatus, including a method for forming an annular motor casing and the assembly of a plurality of electric motors with common casing end caps to produce a concise power unit capable of multiple functions, such as used with vehicle electric adjustable seats. The motor casing is mechanically assembled from formed flat sheet stock by defining interlocking projections and recesses in opposed stock blank ends wherein reception of the projections in the recesses deforms the projections and the recesses are obliquely related in pairs such that a mechanical interconnection results free of "spring back". Three identical motor casing and armature assemblies are maintained in side-by-side relationship by integral end caps, one of the caps including an armature brush card, and a feature of the invention is directed to a brush guide and spring assembly which permits spring biased brushes to be retained in a retracted position for assembly purposes and readily released to an operative condition.
REFERENCES:
patent: 1863018 (1932-06-01), MacCutcheon
patent: 2532827 (1950-12-01), Thomas
patent: 3584248 (1971-06-01), Higashino et al.
patent: 3651355 (1972-03-01), Mason
patent: 4056749 (1977-11-01), Carlson et al.
Duggan Donovan F.
Eaton Stamping Company
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