US PATENT SUBCLASS 290 / 23
.~.~.~ Rotary field and armature

Current as of: June, 1999
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290 /   HD   PRIME-MOVER DYNAMO PLANTS

7  DF  ELECTRIC CONTROL {10}
*  DD  .~ Traction {5}
22  DF  .~.~ Starting and generating dynamo {2}
23.~.~.~ Rotary field and armature {1}
24  DF  .~.~.~.~> Engine control

DEFINITION

Classification: 290/23

Electric-control traction prime-mover dynamo plants including a dynamo electric machine which acts as a motor for starting the prime mover and as an electric generator and having a field and armature, both of which rotate.