US PATENT SUBCLASS 335 / 100
.~.~ Induction or eddy current (e.g., vane or closed conductive loop)

Current as of: June, 1999
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335 /   HD   ELECTRICITY: MAGNETICALLY OPERATED SWITCHES, MAGNETS, AND ELECTROMAGNETS

2  DF  ELECTROMAGNETICALLY ACTUATED SWITCHES {30}
99  DF  .~ Alternating or fluctuating current type {6}
100.~.~ Induction or eddy current (e.g., vane or closed conductive loop)

DEFINITION

Classification: 335/100

(under subclass 99) Subject matter wherein the contact actuating means comprises, or is responsive to, a device which derives its operative torque by magnetic induction from a winding or windings carrying alternating current, by the magnetic reaction between a current flowing in a rotor and an external flux path or by the magnetic repulsive force between magnetic flux sources.

SEE OR SEARCH THIS CLASS, SUBCLASS:

68+, especially indented subclass 70, for induction or synchronous type switch contact operators of the continuously rotating motor type (e.g., induction or synchronous motor).

224+, for magneto-mechanical motive device of dynamometer type utilizing an induced current movable conductor (e.g., eddy current number).

SEE OR SEARCH CLASS

310, Electrical Generator or Motor Structure,

105+, for torque transmitting clutches or brakes with induced or eddy current magnetic field and subclasses 166+ for the structure of induction type dynamo-electric machines in general. 318, Electricity: Motive Power Systems,

727+, for induction motor control systems in general.

324, Electricity: Measuring and Testing,

137+, for eddy current rotor meters (e.g., AC integrating watt hour meter type instruments).