US PATENT SUBCLASS 338 / 32 R
.~ Magnetic field or compass (e.g., Hall effect type)


Current as of: June, 1999
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338 /   HD   ELECTRICAL RESISTORS

13  DF  RESISTANCE VALUE RESPONSIVE TO A CONDITION {10}
32 R.~ Magnetic field or compass (e.g., Hall effect type) {2}
32 H  DF  .~.~> Hall effect
32 S  DF  .~.~> Superconductors

Unofficial Alpha Subclasses: R H S

DEFINITION

Classification: 338/32

(under subclass 13) Subject matter wherein the resistance element includes material whose resistance value is dependent on a magnetic field applied directly thereto, or together with means for applying or facilitating the application of a magnetic field to this material of the resistance element; or wherein a resistor is mechanically linked with the magnet of a magnetic compass to be actuated by this magnet.

SEE OR SEARCH THIS CLASS, SUBCLASS:

43, for resistors responsive to inertia devices, such as a gyro compass.

103+, for a compressible type resistor with an electromagnetic operator.

116, for mechanically variable resistors generally with an electromagnetic operator such as an electric motor.

SEE OR SEARCH CLASS

257, Active Solid-State Devices (e.g., Transistors, Solid-State Diodes), appropriate subclasses, including 108, 414, and 421-427 for devices responsive to magnetic field.

329, Demodulators, appropriate subclasses for magnetic demodulators using, for example, the Hall effect.