US PATENT SUBCLASS 73 / 862.331
.~.~.~.~.~ Inductance or reluctance sensor

Current as of: June, 1999
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73 /   HD   MEASURING AND TESTING

862  DF  DYNAMOMETERS {5}
862.08  DF  .~ Responsive to torque {2}
862.191  DF  .~.~ During transmission to an external load {11}
862.321  DF  .~.~.~ By measuring elastic deformation of a torque transmitting member {4}
862.325  DF  .~.~.~.~ Using an electrical sensor {4}
862.331.~.~.~.~.~ Inductance or reluctance sensor {2}
862.332  DF  .~.~.~.~.~.~> Variable air gap in a magnetic core
862.333  DF  .~.~.~.~.~.~> Detecting magnetostrictive or magnetoelastic property {2}

DEFINITION

Classification: 73/862.331

Inductance or reluctance sensor:

(under subclass 862.325) Subject matter wherein the sensing means is responsive to either (a) the change of a property of an electrical circuit by which an electromotive force is induced in it by a variation of current either in the circuit itself or in a neighboring circuit, or (b) the change in a property of an electric nonconductor that permits the storage of energy as a result of the displacement when opposite surfaces of the nonconductor is maintained at a different potential.

SEE OR SEARCH THIS CLASS, SUBCLASS:

779, for measuring strain using inductance.

SEE OR SEARCH CLASS

361, Electricity: Electrical Systems and Devices,

280+, for a pressure responsive capacitor, per se.