Electrical generator or motor structure – Dynamoelectric – Rotary
Patent
1997-12-03
1999-03-23
Dougherty, Thomas M.
Electrical generator or motor structure
Dynamoelectric
Rotary
310196, 310220, 310125, H02K 100
Patent
active
058864431
ABSTRACT:
A rotor for an induction motor of the squirrel cage type wherein the rotor bars are exposed to a resilient anti-sparking compound in the rotor slots of the machine. The rotor bars are provided with a longitudinal slot to permit the insertion of the anti-sparking compound after assembly of the squirrel cage rotor. Alternatively, the laminations may be shaped to produce a longitudinal groove in the rotor bar slot to permit the insertion of the anti-sparking compound in the groove so produced. Of course, both the rotor bar and the rotor slot may both be provided with complimentary slots adjacent one another in which the anti-sparking compound may be injected.
REFERENCES:
patent: 3466477 (1969-09-01), Newill
patent: 4095627 (1978-06-01), Lonseth et al.
patent: 5182483 (1993-01-01), Hibino et al.
patent: 5389844 (1995-02-01), Yarr et al.
Dymond James Henry
Moore Bernard John
Rehder Robert Henry
Dougherty Thomas M.
General Electric Canada Inc.
Lam Thanh
Oldham Edward H
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