Electric lamp and discharge devices – With temperature modifier – Mounted on lead-in or electrode support
Reexamination Certificate
2011-08-09
2011-08-09
Williams, Joseph L (Department: 2889)
Electric lamp and discharge devices
With temperature modifier
Mounted on lead-in or electrode support
C420S426000, C420S427000
Reexamination Certificate
active
07994692
ABSTRACT:
A highly heat resistant wire based on niobium or tantalum or niobium tantalum alloy for single-side socket lamps is enriched, according to the invention, with phosphorus and converted into an annealed state. The wire exhibits a yield strength Rp 0.2 of at least 200 MPa or a tensile strength Rm of at least 300 MPa. For the production of a frame for single-side socket lamps, a metal based on niobium or tantalum or an alloy thereof is doped with phosphorus and the doped metal is cold shaped into a wire, this wire is annealed and formed into a frame. This frame is used for the simultaneous current supply and holding of a burner in a single-side socket lamp.
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Coughlin Andrew J
Norris McLaughlin & Marcus P.A.
W. C. Heraeus GmbH
Williams Joseph L
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