US PATENT SUBCLASS 313 / 564
HAVING VAPOR GENERATING MATERIAL


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

564HAVING VAPOR GENERATING MATERIAL {2}
565  DF  .~> Mercury vapor material
566  DF  .~> Electrode or electrode support includes material


DEFINITION

Classification: 313/564

HAVING VAPOR GENERATING MATERIAL:

(under the class definition) Subject matter which includes an envelope for an electric lamp or discharge device, at least an electrode and a substance capable of being vaporized within the envelope.

(1) Note. A vapor is the gasified state of a liquid or a solid material.

(2) Note. No electrical heating means is claimed to change the substance from a solid or a liquid to a vapor. See subclass 550 for heating means to heat vapor generating material. In this subclass the heat evolved in the operation of the tube changes the vaporizable substance to a vapor.

(3) Note. The subcombination of an envelope of a lamp or discharge device and a material capable of being vaporized is here in the absence of a class to take the subcombination.

SEE OR SEARCH THIS CLASS, SUBCLASS:

550, for a lamp or discharge device having electrical heating means to vaporize material.

554, for temperature or pressure control of a gas or vapor.

555, for a lamp or discharge device having a getter which is a vapor generating material. 571, for a lamp or discharge device envelope with a gas or vapor fill.

SEE OR SEARCH CLASS

361, Electricity: Electrical Systems and Devices,

2+, particularly 14 for arc blowout for main breaker contact by means of a fluid or gas and subclass 121 for high voltage dissipation by means of a fluid.