Incandescent lamp

Details Incandescent lamp Incandescent lamp

1977-06-22

1979-03-20

Demeo, Palmer C.

Electric lamp and discharge devices

Incandescent lamps

313220, 313222, 313318, H01K 122, H01K 128, H01K 136

Patent

active

041456319

ABSTRACT:
An improved incandescent lamp includes a bulb, a stem, a metal ring body, a filament and lead wires penetrating the stem. The metal ring body is air-tightly welded to the stem and the bulb respectively with the use of oxidation layers on the inner and outer surface thereof to thereby provide hermetic seals therebetween.

REFERENCES:
patent: 3020437 (1962-02-01), Horan
patent: 3275879 (1966-09-01), Demarest et al.
patent: 3757105 (1973-09-01), McCarthy
"Materials and Techniques for Electron Tubes," by W. H. Kohl, Chapter Entitled "Glass-to-Metal Sealing," 1966, p. 416 (Induction Seals), and pp. 443, 444 (Nickel-Chrome-Iron Alloy Seals).

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