Spark suppression of induction type rotors of dynamoelectric mac

Details Spark suppression of induction type rotors of dynamoelectric mac Spark suppression of induction type rotors of dynamoelectric mac

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.

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