Incandescent lamp with structure for collecting evaporated filam

Details Incandescent lamp with structure for collecting evaporated filam Incandescent lamp with structure for collecting evaporated filam

1978-10-18

1981-07-21

Demeo, Palmer C.

Electric lamp and discharge devices

With optical device or special ray transmissive envelope

Reflector

313222, 313315, H01K 100, H01K 126

Patent

active

042800765

ABSTRACT:
An incandescent electric having a filament which incandesces and produces a vapor of the metal of the filament which normally deposits on the envelope wall. Structures are provided adjacent the filament on which vaporized filament material will deposit rather than deposit on the envelope wall where it would reduce the light output of the lamp.

REFERENCES:
patent: 1607515 (1926-11-01), Duncan
patent: 1899587 (1933-02-01), Quesseque
patent: 2151522 (1939-03-01), Nutto
patent: 2208987 (1940-07-01), Kuhne et al.
patent: 2232816 (1941-02-01), Van Horn
patent: 2379058 (1945-06-01), Anderson
patent: 2467710 (1949-04-01), Van Horn et al.
patent: 2494916 (1950-01-01), Van Horn
patent: 2799791 (1957-07-01), Honing et al.
patent: 3073986 (1963-01-01), Hodge
patent: 4160929 (1979-07-01), Thorington et al.

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