Electric motor

Details Electric motor Electric motor

1990-06-08

1992-09-08

Shoop, Jr., William M.

Electricity: motive power systems

Reciprocating or oscillating motor

Energizing winding circuit control

318254, 318439, 388815, 310156, 310268, H02K 1708

Patent

active

051461447

ABSTRACT:
An electric motor is disclosed which is of the brushless D.C. type and comprises a generally planar rotor and a generally planar stator. The rotor is a multipolar permanent magnet, and the stator includes a planar coil having a plurality of windings. In order to provide a motor which can supply a high torque at a relatively low speed and a low torque at a high speed, the stator includes a low speed coil which includes a large number of windings of fine wire and a high speed coil which includes a smaller number of windings of coarse wire.

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