Electrical generator or motor structure – Dynamoelectric – Rotary
Patent
1989-08-04
1991-03-26
Skudy, R.
Electrical generator or motor structure
Dynamoelectric
Rotary
310 72, 310154, 310261, 318473, 338 22R, H02K 1100
Patent
active
050032089
ABSTRACT:
A miniature motor having a positive temperature coefficient thermistor comprising a stator having a permanent magnet serving as a field, a rotor formed by winding a plurality of rotor windings on a rotor core, brushes supported by a motor cover plate for feeding current to the rotor windings by making contact with a commutator, positive temperature coefficient thermistor for controlling current to the rotor windings, in which the positive temperature coefficient thermistor has one pole on one pole surface thereof, and a plurality of independent split poles corresponding to the rotor windings on the other pole surface thereof, and is fitted to an end face of the rotor core;
the rotor windings being connected to the split poles of the positive-coefficient thermistor in such a manner as to be connected in series with the split poles of the positive-coefficient thermistor.
REFERENCES:
patent: 2910600 (1959-10-01), Young
patent: 3453513 (1969-07-01), Bates
patent: 3487248 (1969-12-01), Kaneko
patent: 3488538 (1970-01-01), Hayashi
patent: 3924148 (1975-12-01), Tachibana
patent: 4126798 (1978-11-01), Carr
patent: 4705972 (1987-11-01), Baines
Hama Nobuhiro
Mitamura Sigeru
Saya Tsutomu
Mabuchi Motor Co. Ltd.
Skudy R.
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