Electric lamp seal construction

Details Electric lamp seal construction Electric lamp seal construction

1979-03-19

1980-09-09

Smith, Alfred E.

Electric lamp and discharge devices

Electrode and shield structures

With lead wire or connector

313315, H01J 550

Patent

active

042219892

ABSTRACT:
In electric lamps according to the invention the alkali-alumino-borosilicate glass of the pinch seal of the lamp envelope is directly fused to the molybdenum current supply wire of diameter D. A vacuum-tight seal is obtained in that the glass inside the lamp envelope extends over the current supply wire in a layer which is thinner than D/2 at least over a length of D/2. For use in both incandescent and discharge lamps.

REFERENCES:
patent: 1791275 (1931-02-01), Jones
patent: 3798491 (1974-03-01), Malm
patent: 4074167 (1978-02-01), van den Broek et al.

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