US PATENT SUBCLASS 313 / 22
.~.~ Fluid circulation type

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

11  DF  WITH TEMPERATURE MODIFIER {19}
17  DF  .~ Double wall, jacket or casing for envelope {5}
22.~.~ Fluid circulation type {2}
23  DF  .~.~.~> Plural electrode temperature modifying
24  DF  .~.~.~> Flow directing means in casing

DEFINITION

Classification: 313/22

(under subclass 17) Subject matter in which the structure is designed so that a temperature modifying fluid may be circulated in the space between the envelope and the jacket or casing or between the walls of the double walled envelope.

SEE OR SEARCH THIS CLASS, SUBCLASS:

18+, where the envelope of the lamp or discharge device is made in whole or part of conductive material.

36, for discharge devices and lamps which are not provided with an envelope but which includes a jacket or casing for the discharge device or lamp or a part thereof, and means to apply a temperature modifying fluid to the lamp or discharge device. Some of the devices in subclass 36 are open-air arc lamps with casing means around portions of the lamp to direct a cooling fluid into contact with a portion of the lamp.