External rotor motor

Details External rotor motor External rotor motor

1978-06-26

1980-06-24

Duggan, Donovan F.

Electrical generator or motor structure

Dynamoelectric

Rotary

310 90, H02K 516

Patent

active

042097215

ABSTRACT:
An electric motor having an external rotor, an armature shaft passing therethrough, and an internal stator surrounding the armature. The armature is coupled to the stator by a rolling bearing. The improvement comprises the bearing as a double-rowed radial bearing having a common outer ring within the bore of the stator, first and second races, spaced from one another and adapted to receive first and second rows of rolling elements, and first and second inner races worked directly into the armature shaft.

REFERENCES:
patent: 1780339 (1930-11-01), Canton
patent: 3002118 (1961-09-01), Papst
patent: 3107946 (1963-10-01), Drake
patent: 3596122 (1971-07-01), Stewart
patent: 3742267 (1973-06-01), Papst et al.
patent: 3822602 (1974-07-01), Holmes et al.

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