Electric lamp
AssigneeU.S. Philips Corporation
InventorVictor Rosallie Notelteirs
Life of this patent
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Abstract
Outer molybdenum current conductors of electric lamps having quartz glass lamp envelopes and pinched seals have a corrosion-resistant metal coating. The current conductors have been ground bare at the end which is welded to a molybdenum foil incorporated in the pinched seal. As a result of this it is achieved that the current conductors do not corrode, that the welding electrode upon making the connection to the foil does not stick to the coating, and that upon making the pinched seal the electric contact between the foil and the current conductor is not interrupted.
Claims3
An electric lamp having a quartz glass lamp envelope with pinched seal, a molybdenum foil, to which an inner current conductor and an outer current conductor of molybdenum are welded, being incorporated in the pinched seal, characterized in that the outer current conductor has a corrosion-resistant metal coating and has been ground bare at the end welded to the foil.
Dependencies are inferred from the claim text.