Electric lamp assembly with a molded plastic base

Illumination – Multiple filament light unit

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Details

362267, 362368, 362296, 362375, 362308, 362310, 313318, F21M 330

Patent

active

045478384

ABSTRACT:
An electric lamp assembly comprises a lamp unit of generally conventional design, and a base subassembly coupled thereto both mechanically and electrically. The lamp unit may take the form of a halogen cycle lamp of the baseless type terminating in a pinch seal, with lead support wires extending outwardly therefrom. The base subassembly includes a metal made, dislike lamp holder apertured for the passage of the lamp unit seal therethrough and firmly engaging the same for holding the lamp unit. The lamp holder further engages one end of a metal made, tubular coupling, the other end of which is received with a sliding fit in one end of a substantially tubular base unit molded of plastics material. Extending through the coupling, the lead support wires are electrically and mechanically coupled as by welding to connectors mounted to a partition within the base unit. The plastic base unit is easier and less expensive to fabricate to close dimensionsal tolerances than the conventional metal base.

REFERENCES:
patent: 3621232 (1971-11-01), Hough
patent: 3818215 (1974-06-01), Schmidt et al.
patent: 4019045 (1977-04-01), Bassett
patent: 4119877 (1978-10-01), Grewe et al.
patent: 4396860 (1983-03-01), Hellwig et al.
patent: 4412273 (1983-10-01), Helbig et al.

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