Incandescent lamp having seal-anchored filament mount, and metho

Electric lamp and discharge devices – With support and/or spacing structure for electrode and/or... – For plural electrodes of discharge device

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313315, H01K 118

Patent

active

043541372

ABSTRACT:
The envelope of a compact halogen-cycle incandescent lamp is made from hard glass and the uncoiled legs of the tungsten filament are used as filament connector-support members by fastening them directly to flattened ends of a pair of single lead wires and embedding the resulting electrical junctures in the hermetic seal of fused glass which is formed on the end of the envelope. The lead wires originally comprise the legs of a hairpin-shaped wire member which permits the filament-mount to be made and handled as a separate subassembly. The U-bent part of the hairpin-shaped wire member is severed and removed after the mount has been sealed into the envelope to provide the required pair of separate lead wires.

REFERENCES:
patent: 3211943 (1965-10-01), Cardwell
patent: 3445713 (1969-05-01), Cardwell
patent: 3496401 (1970-02-01), Dumbaugh
patent: 3544830 (1970-12-01), George et al.
patent: 3588315 (1971-06-01), Levand
patent: 3641386 (1972-02-01), Audesse et al.
patent: 3648094 (1972-03-01), De Caro et al.
patent: 3668391 (1972-06-01), Kimball
patent: 3829729 (1974-08-01), Westlund et al.
patent: 4005324 (1977-01-01), Dolenga et al.

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