US PATENT SUBCLASS 318 / 661
.~.~.~.~ Resolver systems

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}
656  DF  .~.~.~ Differential transformer systems {5}
661.~.~.~.~ Resolver systems

DEFINITION

Classification: 318/661

(under subclass 652) Subject matter in which the particular position measuring instrument is a resolver. A resolver is a rotary transformer which has two phase windings on either or

both the rotor and stator and may be used for resolving a vector into two mutually perpendicular components, such as translating rotor angle into electrical information corresponding to the sine and cosine of rotor angle. A resolver may also be considered as a two phase synchro.

SEE OR SEARCH THIS CLASS, SUBCLASS:

654+, for synchro systems, per se.