Electrical generator or motor structure – Dynamoelectric – Rotary
Patent
1974-07-23
1976-08-03
Hall, Carl E.
Electrical generator or motor structure
Dynamoelectric
Rotary
29509, 29522, 29596, 310218, H02K 1502
Patent
active
039731510
ABSTRACT:
A method of manufacturing stator assemblies for dynamo electric machines in which the stator assemblies are of the kind including a hollow cylindrical yoke carrying a pole member on its inner surface comprising starting with a pole member having upstanding therefrom an integral spigot, and a yoke member, the wall of which includes a through bore of larger diameter than the spigot, performing a deforming operation on the yoke at the outer end of the bore to enlarge the diameter of the outer end of the bore and at the same time reduce the diameter of the bore intermediate its ends. The intermediate diameter of the bore is reduced to that of the spigot, and the spigot is then inserted through the bore from the inner end thereof so that the pole member lies against the inner surface of the yoke. The free end of the spigot is then deformed to produce a rivet head occupying the outer, enlarged region of the bore, and thus secure the pole member to the yoke.
REFERENCES:
patent: 231231 (1880-08-01), Klein
patent: 1275576 (1918-08-01), Lockwood
patent: 2447048 (1948-08-01), Baker
patent: 2958230 (1960-11-01), Haroldson
patent: 3021444 (1962-02-01), Simmons et al.
patent: 3761754 (1973-09-01), Boesel
Hall Carl E.
The Lucas Electrical Company Limited
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