Electric filament lamps

Details Electric filament lamps Electric filament lamps

1980-06-03

1982-12-28

Chatmon, Jr., Saxfield

Electric lamp and discharge devices

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

For filament

313273, 313278, H01J 188, H01J 1942, H01K 118

Patent

active

043664113

ABSTRACT:
A quartz iodine studio lamp has a tungsten filament (32) formed of several sections (34) arranged in a plane between two quartz bridges (16,18) which are in turn supported by support wires (20,22). One end of the filament assembly (14) is supported in a seal (28) forming one end of the envelope (12). To stabilize the filament assembly, so as to stop it hitting the envelope wall, two spring coils (40) are carried by the bridge (16) remote from the seal (28) and extend transversely of the envelope to its inner surface.

REFERENCES:
patent: 2824995 (1958-02-01), Kirk
patent: 3440473 (1969-04-01), Smith et al.
patent: 3497752 (1970-02-01), Peterson
patent: 3986067 (1976-10-01), De Fraeye
patent: 4023060 (1977-05-01), Pike et al.

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