US PATENT SUBCLASS 318 / 665
.~.~.~.~ Continuous rotation, unlimited range

Current as of: June, 1999
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318 /   HD   ELECTRICITY: MOTIVE POWER SYSTEMS

560  DF  POSITIONAL SERVO SYSTEMS (E.G., SERVOMECHANISMS) {23}
638  DF  .~ With particular "error-detecting" means {13}
652  DF  .~.~ With particular position measuring instruments {7}
663  DF  .~.~.~ Potentiometer systems including autotransformers and Wheatstone bridges {4}
665.~.~.~.~ Continuous rotation, unlimited range

DEFINITION

Classification: 318/665

(under subclass 663) Subject matter in which the position measuring potentiometer is circular and means are provided to allow continuous rotation of the wiper beyond 360 deg..