Miniature motor having positive-coefficient thermistor

Details Miniature motor having positive-coefficient thermistor Miniature motor having positive-coefficient thermistor

1989-09-01

1991-04-23

Stephan, Steven L.

Electrical generator or motor structure

Dynamoelectric

Rotary

310 68C, 338 25, 361106, H02K 1100, H01C 702, H02H 504

Patent

active

050102648

ABSTRACT:
A miniature motor having a positive-coefficient thermistor in which a first supporting member made of an electrically conductive material and electrically connected to at least any one of a pair of brushes housed in a motor cover plate, and a second supporting member made of an electrically conductive material and electrically connected to an external terminal are provided; a positive-coefficient thermistor being supported between the first and second supporting members.
This construction makes the assembly of the motor easy, leading to improved productivity, and allows the motor to have a positive overheat preventing function without adding to the number of parts.

REFERENCES:
patent: 4177396 (1979-12-01), Wang
patent: 4293789 (1981-10-01), King
patent: 4408244 (1983-10-01), Weible
patent: 4698614 (1987-10-01), Welch et al.
patent: 4789800 (1988-12-01), Zimmermann
patent: 4792877 (1988-12-01), Thornton
patent: 4801833 (1989-01-01), Dye
patent: 4816192 (1989-03-01), Abou-Aly et al.

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