US PATENT SUBCLASS 324 / 234
.~.~ Electrically energized nonforce type sensor

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

200  DF  MAGNETIC {24}
228  DF  .~ With means to create magnetic field to test material {5}
234.~.~ Electrically energized nonforce type sensor {3}
235  DF  .~.~.~> Noncoil type
236  DF  .~.~.~> Oscillator type {1}
238  DF  .~.~.~> Material flaw testing

DEFINITION

Classification: 324/234

Electrically energized nonforce type sensor:

(under subclass 228) Subject matter wherein the apparatus to sense and indicate the sensing of the magnetic field modified by the material includes a sensor which requires an electrical current to pass therethrough, and which senses and indicates the magnetic field other than by a force measurement.

(1) Note. Included are self-inductance-type field sensors.

SEE OR SEARCH THIS CLASS, SUBCLASS:

228, for the testing of material magnetically by torque magnetometers and electrically energized sensors of force.

244, for magnetometers.

260, for magnetic sensors not electrically energized.

300+, for the testing of material by nuclear or electronic induction.

323+, for the magnetic testing of material by a magnetic field. 332+, especially, which requires a magnetic field to test material within or part of the upper natural surface of the earth.