Christmas bulb structure

Details Christmas bulb structure Christmas bulb structure

2007-10-16

2007-10-16

Bruce, David (Department: 2809)

Electric lamp and discharge devices

Incandescent lamps

Plural filaments or glowers

C313S315000

Reexamination Certificate

active

11196308

ABSTRACT:
The present invention discloses an improved Christmas bulb structure, which comprises: a bulb shell; two conductive wire, extending from the interior of the bulb shell to the exterior of the bulb shell; an insulator, separating those two conductive wires; an elastic platelet, installed between those two conductive wires; a tungsten filament, with its two ends separately connecting the elastic platelet and one of those two conductive wires; and a transverse conductive wire, installed inside the insulator and between those two conductive wires; when the Christmas bulb structure is electrically powered, the other conductive wire will contact the elastic platelet, and the tungsten filament will be lit on. The present invention is characterized in that the transverse conductive wire enables the Christmas bulb structure to possess two current paths; thereby, the present invention can obtain a diversified lighting effect, and the cost can be lowered.

REFERENCES:
patent: 2627590 (1953-02-01), Selfrid
patent: 6107746 (2000-08-01), Chen
patent: 6642660 (2003-11-01), Shieh

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