US PATENT SUBCLASS 313 / 259
.~.~.~.~.~ Insulating coating forms spacer

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

238  DF  WITH SUPPORT AND/OR SPACING STRUCTURE FOR ELECTRODE AND/OR SHIELD {9}
243  DF  .~ For plural electrodes of discharge device {3}
244  DF  .~.~ Envelope supports or forms electrode {5}
252  DF  .~.~.~ Support structure supported by the envelope {7}
257  DF  .~.~.~.~ With spacer between electrode or electrode supports {4}
259.~.~.~.~.~ Insulating coating forms spacer

DEFINITION

Classification: 313/259

(under subclass 257) Discharge devices in which the spacing member is formed by an insulating coating.

(1) Note. In some of the discharge devices in this subclass, an electrode or electrode support is coated with an insulating coating, and another electrode is wound upon or coiled about the electrode or electrode support, the insulating coating spacing and insulating the electrode from the supporting electrode or electrode support.

(2) Note. This subclass includes devices where the spacer member is formed of conductive material provided with an insulating coating so that the electrodes will be spaced and insulated from each other.

SEE OR SEARCH THIS CLASS, SUBCLASS:

355, for the structure of electrodes which have a coating thereon.

SEE OR SEARCH CLASS

428, Stock Material or Miscellaneous Articles, appropriate subclasses for a stock material product (in the form of a single or plural layer web, sheet, rod, fiber or filament), and especially 375+, for electrodes for lamps and discharge devices which involve no more than a base with a coating thereon.