Miniature motor

Details Miniature motor Miniature motor

1994-06-16

1996-03-26

Budd, Mark O.

Electrical generator or motor structure

Dynamoelectric

Rotary

310 40MM, 310228, H02K 1306

Patent

active

055023436

ABSTRACT:
A miniature motor comprising a case made of a metallic material, formed into a bottomed hollow tubular shape and having a permanent magnet fixedly fitted to the inner circumferential surface thereof, a rotor having an armature facing the permanent magnet and a commutator, and a case cap fitted to an open end of the case, and having brushes for making sliding contact with the commutator and input terminals electrically connected to the brushes; the rotor being rotatably supported by bearings provided on the bottom of the case and the case cap, in which an internal space defined by the case and the case cap is filled with an atmosphere of a polymer having a weight-average molecular weight of 50-5000.

REFERENCES:
patent: 1703372 (1955-03-01), Savage
patent: 4680495 (1987-07-01), Chiampas et al.
patent: 5357159 (1994-10-01), Hagiwara
Patent Abstracts of Japan, C field, vol. 10. No. 219.
Patent Abstracts of Japan, E field, vol. 9, No. 332.

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