Motor and light amount adjusting apparatus

Details Motor and light amount adjusting apparatus Motor and light amount adjusting apparatus

2005-02-22

2005-02-22

Waks, Joseph (Department: 2834)

Electrical generator or motor structure

Dynamoelectric

Rotary

C310S266000, C310S268000

Reexamination Certificate

active

06858959

ABSTRACT:
A motor having a short axial length and a large torque, including a disk-shaped rotor having at least one plane magnetized in a plurality of different poles in a rotational direction thereof, a coil arranged such that an inner circumferential surface of the coil faces an outer circumferential surface of the rotor, or an outer circumferential surface of the coil faces an inner circumferential surface of the rotor, a first magnetic pole portion that faces a plane of the rotor, is formed with teeth extending in a radial direction of the rotor, and can be excited by the coil, and a second magnetic pole portion that is provided on a side of the rotor opposite the first magnetic pole portion such that the first and second magnetic pole portions sandwich the rotor, and can be excited by the coil.

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