Slip ring assembly for A.C. machines

Details Slip ring assembly for A.C. machines Slip ring assembly for A.C. machines

1975-04-30

1976-08-24

Duggan, Donovan F.

Electrical generator or motor structure

Dynamoelectric

Rotary

339 8R, H01R 3908

Patent

active

039769038

ABSTRACT:
A slip ring assembly for an a.c. machine comprises a pair of copper rings mounted on an electrically insulating sleeve formed of two arcuate portions, each of which extends for less than the true semi-circle so that the sleeve is not a true cylinder of circular cross-section. Means internally of the sleeve urges the arcuate portions outwardly when the sleeve is mounted on a rotor shaft of the a.c. machine so as to retain the rings in position on the sleeve. The means may be in the form of a separate, split cylindrical spring or in the form of a taper on the inner surface of the sleeve which engages a corresponding taper on the rotor shaft.

REFERENCES:
patent: 2248759 (1941-07-01), Hollander
patent: 2718604 (1955-09-01), Herrick
patent: 2954492 (1960-09-01), De Voe et al.
patent: 3265914 (1966-08-01), Derber et al.
patent: 3636394 (1972-01-01), Forste et al.
patent: 3842301 (1974-10-01), Smith

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