Linear filament assembly with refractory insulating support rod

Details Linear filament assembly with refractory insulating support rod Linear filament assembly with refractory insulating support rod

1980-05-20

1983-05-17

Demeo, Palmer C.

Electric lamp and discharge devices

With support and/or spacing structure for electrode and/or...

For filament

313279, 313579, H01K 118, H01K 150

Patent

active

043842356

ABSTRACT:
A linear filament assembly for a halogen cycle incandescent lamp comprises a generally linear filament (usually a coil or coiled coil) supported at opposite ends by substantially rigid conductive leads, a rigid insulating rod, for example of quartz, extending generally parallel to the filament, and a plurality of supports extending between the rod and the filament, each support being fixedly secured to the rod, for example by having a coil part fitting over the rod and also being formed with a coil loosely exbracing the filament. The coils embracing the filament preferably include several closely spaced turns which loosely embrace part of the filament coil, without screwing into or engaging individual pitches of the latter.

REFERENCES:
patent: 2901658 (1959-08-01), Pero et al.
patent: 3891885 (1975-06-01), Wurster

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