US PATENT SUBCLASS 310 / 189
.~.~.~.~ Variable length or tapped winding

Current as of: June, 1999
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310 /   HD   ELECTRICAL GENERATOR OR MOTOR STRUCTURE

10  DF  DYNAMOELECTRIC {5}
40 R  DF  .~ Rotary {28}
179  DF  .~.~ Windings and core structure {7}
180  DF  .~.~.~ Field or excitation windings or structure {9}
189.~.~.~.~ Variable length or tapped winding

DEFINITION

Classification: 310/189

(under subclass 180) Subject matter in which the field coil has a variable length or a tapped winding.

SEE OR SEARCH CLASS

322, Electricity: Single Generator Systems,

71, for this subject matter in a single generator system.

336, Inductor Devices,

150, for inductor tap changing means.

388, Electricity: Motor Control Systems, 835+, for running-speed control systems in which the length of the field winding may be varied.