Halogen cycle incandescent lamp having an intermediate lead-in conductor part
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United States of America Patent
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-
Dec 25, 1984
Grant Date -
N/A
app pub date -
May 19, 1982
filing date -
Jun 26, 1981
priority date (Note) -
Expired
status (Latency Note)
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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.
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