US PATENT SUBCLASS 315 / 331
.~.~.~ Movable auxiliary starting electrode

Current as of: June, 1999
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315 /   HD   ELECTRIC LAMP AND DISCHARGE DEVICES: SYSTEMS

326  DF  DISCHARGE DEVICE LOAD {8}
327  DF  .~ Discharge drawing-type discharge device {3}
330  DF  .~.~ Auxiliary starting electrode type {1}
331.~.~.~ Movable auxiliary starting electrode {1}
332  DF  .~.~.~.~> Automatic switch in the electrode moving device circuit

DEFINITION

Classification: 315/331

(under subclass 330) Systems wherein the auxiliary starting electrode of the discharge device is mounted so as to be movable into physical contact with one of the principal electrodes.

SEE OR SEARCH CLASS

313, Electric Lamp and Discharge Devices,

146+, for discharge devices, per se, which are provided with a movable discharge drawing auxiliary starting electrode.

314, Electric Lamp and Discharge Devices: Consumable Electrodes,

34, for consumable electrode discharge devices (carbon arc lamps) having a movable auxiliary discharge drawing starting electrode and the circuit therefor.