Halogen cycle incandescent lamp having an intermediate lead-in c

Details Halogen cycle incandescent lamp having an intermediate lead-in c Halogen cycle incandescent lamp having an intermediate lead-in c

1982-05-19

1984-12-25

Demeo, Palmer

Electric lamp and discharge devices

With gas or vapor

Incandescent filament lamp

313631, 313332, H01K 120, H01K 140

Patent

active

044906463

ABSTRACT:
To prevent the occurrence of brittle weld junctions upon joining thin intal lead-in wires (3a, 3a') to thicker connecting pin wires (3b, 3b'), an intermediate element of nickel (4) is positioned between the thinner and thicker wire parts, the nickel joining easily with the two parts of the molybdenum wires. The junction molybdenum-nickel-molybdenum, or tungsten-nickel-tungsten in case tungsten wires are used, is preferably located within the region of the press (5) of the lamp (1). In contrast to direct welding of molybdenum to molybdenum, or tungsten to tungsten, the weld does not decay.

REFERENCES:
patent: 1547180 (1925-07-01), Murphy
patent: 2716714 (1955-08-01), Adams et al.

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