Electric rotating machine

Details Electric rotating machine Electric rotating machine

1974-08-08

1977-01-18

Duggan, Donovan F.

Electrical generator or motor structure

Dynamoelectric

Rotary

310164, 310156, 310257, H02K 7118

Patent

active

040041689

ABSTRACT:
A self-starting unidirectional electric motor in which a pair of auxiliary stator pole members are angularly spaced from the main stator poles and are provided with a magnetic return path having a reluctance which is less than the reluctance of the return path for the main stator poles. When the field coil of the motor is deenergized, the rotor consistently assumes a favorable starting position in which each rotor pole is opposite one of the auxiliary pole members. In several advantageous embodiments the housing for the motor is fabricated from nonconductive, nonmagnetic material, and the main stator poles serve as the motor's electrical terminals.

REFERENCES:
patent: 3370189 (1968-02-01), Haydon et al.
patent: 3475630 (1969-10-01), Heinzen et al.
patent: 3495107 (1970-02-01), Haydon
patent: 3863084 (1975-01-01), Hasebe

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