Motor

Details Motor Motor

1991-12-13

1993-09-14

Stephan, Steven L.

Electrical generator or motor structure

Dynamoelectric

Rotary

310 67R, 310 68B, 359198, H02K 524, H02K 714, H02K 1100

Patent

active

052452344

ABSTRACT:
A scanning motor having a bracket, a shaft member secured to the bracket, a rotor rotatably supported by the shaft member via a pair of bearings and a polygonal mirror fastened to the rotor, the polygonal mirror being disposed at a position on the outside of either of a pair of the bearings. The rotor has a rotor body and a yoke member which constitutes a balance adjusting groove in cooperation with a frequency generating magnet fastened to the yoke member. A motor having a bracket, a rotor, magnetic force generating means disposed in the bracket, magnetic flux changing means fastened to the rotor, sensing means for sensing change in the magnetic flux taken place in a magnetic circuit constituted by the magnetic force generating means and the magnetic flux changing means and a covering member for covering the magnetic force generating means.

REFERENCES:
patent: 4594524 (1986-06-01), Sudo
patent: 4626727 (1986-12-01), Janson
patent: 4818907 (1989-04-01), Shirotori
patent: 4836631 (1989-06-01), Shimazu et al.
patent: 4934836 (1990-06-01), Tanaka et al.
patent: 5010263 (1991-04-01), Murata
patent: 5103335 (1992-04-01), Sugiura
patent: 5128571 (1992-07-01), Itsu
patent: 5138477 (1992-08-01), Omura et al.

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