US PATENT SUBCLASS 335 / 148
.~.~ Moving coil type

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

2  DF  ELECTROMAGNETICALLY ACTUATED SWITCHES {30}
147  DF  .~ Electrodynamically actuated {1}
148.~.~ Moving coil type {2}
149  DF  .~.~.~> Plural coils
150  DF  .~.~.~> With reset or restoring means

DEFINITION

Classification: 335/148

(under subclass 147) Subject matter wherein the device includes structure by which the mechanical forces necessary to actuate the movable contact, or contacts, are developed by the interaction of the field set up in a moving coil or closed conductive loop and the polarizing field surrounding it. The fixed magnet is usually of the permanent type but may be an electromagnet.

(1) Note. The moving coil devices to be found here operate either on the D'Arsonval or dynamometer principle and the search to be complete should include Class 324, subclasses 76.11+, especially indented subclasses 144+.

SEE OR SEARCH THIS CLASS, SUBCLASS:

222, for relatively movable coil and permanent magnet.

224+, below, for induced current relatively movable coil devices.

SEE OR SEARCH CLASS 318, Electricity: Motive Power Systems,

654+, for position servomechanisms utilizing synchro transformer networks, subclass 661, for similar systems using synchro resolvers, and subclass 692, for self-synchronous motor controls utilizing "Selsyn" type transmitter-motor systems.

323, Electricity: Power Supply, or Regulation Systems,

255, and 340 for impedance systems utilizing reactor devices with relatively movable windings.

336, Inductor Devices,

75+, and 115+ for inductor devices with relatively movable coils.

340, Communications: Electrical,

870.31+, for telemetering systems employing inductive transmitters.