US PATENT SUBCLASS 313 / 326
ELECTRODE AND SHIELD STRUCTURES

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

326ELECTRODE AND SHIELD STRUCTURES {14}
327  DF  .~> Self-baking electrodes (e.g., Soederberg)
328  DF  .~> Liquid electrode container
329  DF  .~> Mosaic electrodes
331  DF  .~> With lead wire or connector {4}
336  DF  .~> Point source cathodes
337  DF  .~> Indirectly heated cathodes {3}
341  DF  .~> Filament or resistance heated electrodes {4}
346 R  DF  .~> Cathodes containing and/or coated with electron emissive material {1}
347  DF  .~> Incandescible upon electron bombardment
348  DF  .~> Foraminous electrodes (e.g., grids) or shields {2}
351  DF  .~> Multipointed or serrated edge electrode
352  DF  .~> Composite electrodes or shields {3}
356  DF  .~> Tubular or hollow sleeve
357  DF  .~> Rods

DEFINITION

Classification: 313/326

Electrodes and shields for electric lamps and electric space discharge devices which are defined by their structure.

(1) Note. For the definition of "electrodes" and "shields", see the glossary in the class definition.

(2) Note. This and the indented subclasses do not include electrodes and shields which are defined solely by their composition. Also excluded are electrodes and shield which

are defined by their composition and the only structure defined is that the electrode is a wire, rod, strip, cylinder. Also excluded are electrodes and shields which involve no more structure than a base having a coating thereon. For the classes which provide for the excluded subject matter and the distinction between such classes, see the class definition.

(3) Note. Joints and connections between an electrode or shield and a lead wire or connector are not included in this or the indented subclass unless the structure claimed includes some significant structure of the electrode or shield beyond that which is provided for making the joint or connection. Where the structure of the electrode or shield is not involved excepting such structure as is necessary for the joint, even though the joint is claimed as being for electrically connecting the parts, see the classes referred to in the class definition.

SEE OR SEARCH THIS CLASS, SUBCLASS:

11+, where the electrode structure includes means for modifying the temperature of the electrode (e.g., hollow electrodes having conduits therein for circulating a cooling fluid therethrough, electrodes having heat radiating surfaces, electrodes provided with heat insulating means).

54, where the electrode contains or is coated with a radio-active material.

631+, for devices under the class definition having an envelope containing a gas or vapor and an electrode of particular structure. SEE OR SEARCH CLASS

96, Gas Separation: Apparatus,

95, and 98 for electrodes for electrical precipitators.

219, Electric Heating,

145.1+, and 146.1+ for electrodes designed for use in arc welding.

314, Electric Lamp and Discharge Devices: Consumable Electrodes,

60, for electrodes limited by claimed structure to use in discharge devices of the consumable electrode type, where the feed of an electrode towards another of the electrodes is accomplished by the consummation of the electrode material or by the destruction of obstructions to the motion of the electrode.

378, X-Ray or Gamma Ray Systems or Devices,

121+, and 143+ for X-ray tube electrodes; and subclasses 145+ and 203 for shields.

428, Stock Material or Miscellaneous Articles,

364+, for a rod, strand, fiber or filament which is coated or is structurally defined, but omits structure (e.g., terminals or leads) which defines an electrode or a shield, or a product for classification elsewhere, and subclass 560 for a metallic composite in which a component has metal particles held in a nonmetal which acts as a binder. 445, Electric Lamp or Space Discharge Component or Device Manufacturing,

35+, 46+ and 60+ and the classes specified in the notes thereto for processes and apparatus for making electrodes and shield for electric lamps and space discharge devices.