US PATENT SUBCLASS 73 / 862.333
.~.~.~.~.~.~ Detecting magnetostrictive or magnetoelastic property

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  DF  .~.~.~.~.~ Inductance or reluctance sensor {2}
862.333.~.~.~.~.~.~ Detecting magnetostrictive or magnetoelastic property {2}
862.334  DF  .~.~.~.~.~.~.~> Grooved or slotted torsion shaft
862.335  DF  .~.~.~.~.~.~.~> Magnetic sleeve or layer {1}

DEFINITION

Classification: 73/862.333

Detecting magnetostrictive or magnetoelastic property:

(under subclass 862.331) Subject matter wherein the sensing means senses a change in a magnetic property of; (a) the elastic member, or (b) a layer on the elastic member, or (c) an element encircling and rigidly attached to the torque transmitting member.

SEE OR SEARCH THIS CLASS, SUBCLASS:

779, for measuring stress in a specimen which causes a variation in the strength of magnetic flux intercepted by a sensor or a change in reluctance of a magnetic circuit including a sensor and wherein the specimen is mechanically coupled to the sensor.

862.69, for a force measuring device sensing a magnetic property of a stressed member.

SEE OR SEARCH CLASS

324, Electricity: Measuring and Testing,

209, for stress measurement by a magnetic field in which a specimen directly interacts with the magnetic field. 336, Inductor Devices,

20, for a magnetostrictive device, per se.