US PATENT SUBCLASS 314 / 51
PLURAL MOVABLE ELECTRODES


Current as of: June, 1999
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314 /   HD   ELECTRIC LAMP AND DISCHARGE DEVICES: CONSUMABLE ELECTRODES

51PLURAL MOVABLE ELECTRODES {1}
52  DF  .~> Plural electrode feeding {1}


DEFINITION

Classification: 314/51

(under the class definition) Subject matter provided with a plurality of electrodes which are moveably mounted.

(1) Note. This subclass and the indented subclasses contain as original patents only patents claiming consumable electrode discharge devices having only two electrodes, both movable, but take as cross references patents from preceding subclasses, such as subclass 36 and indented subclasses, claiming consumable electrode discharge devices having three or more electrodes, where two or more of the electrodes are moveably mounted.

(2) Note. In most of the devices in this subclass each of the electrodes is mounted so as to be moved towards and away from the other electrode for other than feeding purposes; plural movable electrodes for feeding purposes being in the indented subclasses.

SEE OR SEARCH THIS CLASS, SUBCLASS:

3, and 4 and indented subclasses, for consumable electrode discharge devices having three or more electrodes wherein the discharge is initiated between two of the electrodes and is maintained between these electrodes until at least one of the electrodes is consumed or fails to maintain the discharge, the discharge then being shifted to another electrode or electrodes, and having the first operated consumable electrode and the substituted electrode connected together by mechanical means so that these movable electrodes are each operated by the same mechanical means.

31, 33, 36 and indented subclasses, for consumable electrode discharge devices provided with three or more electrodes and having at least two of the electrodes mounted so as to be movable with respect to the other electrodes. 34, for consumable electrode discharge devices having three or more electrodes, one of the electrodes being designed only to be moved towards and away from one of the principal electrodes to initiate the discharge between two of the other principal electrodes, and one or the principal electrodes being mounted so as to be movable to compensate for the consumption of the consumable electrode.

47, and 48, for consumable electrode discharge devices provided with plural pivoted electrodes which are mounted in inclined or parallel relation with respect to each other.