US PATENT SUBCLASS 313 / 580
.~.~ With filter, barrier, screen, shield, electric terminal or fuse


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

567  DF  WITH GAS OR VAPOR {24}
578  DF  .~ Incandescent filament lamp {2}
580.~.~ With filter, barrier, screen, shield, electric terminal or fuse


DEFINITION

Classification: 313/580

With filter, barrier, screen, shield, electric terminal or fuse:

(under subclass 578) Subject matter which includes, (1) a physical screen to trap unwanted material as vaporized filament material, (2) a screen or shield for preventing an explosion, or fire within the lamp, (3) a quick make and break electrical connector attached to the filament, (4) a barrier to contain or impede the circulation of gas or vapor within the envelope, or (5) an integral fuse in circuit with the filament.

SEE OR SEARCH THIS CLASS, SUBCLASS:

579, for tungsten filament-halogen cycle lamps that lessens blackening of the lamp envelope.

SEE OR SEARCH CLASS

96, Gas Separation: Apparatus, for apparatus for gas separation, per se.

315, Electric Lamp and Discharge Devices: Systems,

119+, for an electric lamp with an automatic shunt or cut-off. 337, Electricity: Electrothermally or Thermally Actuated Switches,

142+, for fusible element actuated switch.

439, Electrical Connectors,

611+, for a quick make or break electrical connector with a vitreous envelope secured to contact or coupling part.