Electrical generator or motor structure – Dynamoelectric – Rotary
Patent
1981-05-19
1984-03-13
Skudy, R.
Electrical generator or motor structure
Dynamoelectric
Rotary
310 46, 310234, 310266, H02K 300
Patent
active
044370288
ABSTRACT:
This invention provides a DC multi-pole electrodynamic device, specifically a cup type DC multi-pole coreless motor having fixed field magnets, a magnetic material for closing the magnetic circuits of the field magnets, an armature composed of armature coils constructed of a plurality of loops, each having successive active armature portions adjacent to successive ones of said fixed magnetic field poles, respectively, the armature coils being formed by winding a conductor in substantially the same circumferential direction a predetermined number of times, the armature coils being formed by winding said conductor periodically in opposite axial directions with respect to magnetic poles without forming adjacent physically closed coils, the armature having coil taps equal to half the number of magnetic pole pieces, a commutator having commutator segments electrically connected to said coils, and a set of two fixed brushes.
REFERENCES:
patent: 2552863 (1971-05-01), Petit
patent: 3356877 (1967-12-01), Burr
patent: 4103196 (1978-07-01), Saito
patent: 4107587 (1978-08-01), Ban
patent: 4123679 (1978-10-01), Miyasaka
patent: 4197475 (1980-04-01), Ban
patent: 4200971 (1980-05-01), Shimizu
patent: 4227107 (1980-10-01), Ban
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