US PATENT SUBCLASS 318 / 658
.~.~.~.~ "E" type transformer

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}
658.~.~.~.~ "E" type transformer

DEFINITION

Classification: 318/658

(under subclass 656) Subject matter in which the differential transformer is of the "E" type. An "E" type differential transformer is one in which the magnetic structure takes the form of an E.