Direct current motor

Details Direct current motor Direct current motor

1984-06-13

1985-08-20

Duggan, Donovan F.

Electrical generator or motor structure

Dynamoelectric

Rotary

310230, 310307, H02K 1300

Patent

active

045366691

ABSTRACT:
A d.c. motor comprises a cylindrical yoke, at least one set of field magnets of permanent magnets fixed to the inner peripheral surface of the yoke, an armature wound with armature windings so as to be surrounded by the field magnets, a commutator firmly mounted on a rotary shaft of the armature, a set of brushes being in slide-contact with the commutator, and a displacing means for shifting the position at which the brushes are made in slide-contact with the commutator in the counter direction of the rotation of the armature depending on rise in temperature of the d.c. motor.

REFERENCES:
patent: 1796193 (1931-03-01), Eaton
patent: 1927176 (1933-09-01), Langley
patent: 2753477 (1956-07-01), Yahn
patent: 3480813 (1969-11-01), Sillano
patent: 4010455 (1977-03-01), Stange

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