Gas discharge lamp having supporting tongue formed from electrode feedthrough
AssigneeU.S. Philips Corporation
InventorsAndre J. B. M. Van Herck, Gerardus A. P. M. Cornelissen
Life of this patent
Estimating the term…
Abstract
Electric discharge lamp having a cylindrical ceramic discharge vessel, closed in a vacuum-tight manner, the wall of which incorporates a current feedthrough member, which extends outside the discharge vessel and is provided there, for bearing on the discharge vessel, with at least one outwardly-extending tongue formed by disturbing the outer surface of the current feedthrough member.
Claims2
An electric discharge lamp having a tubular ceramic discharge vessel which is closed in a vacuum-tight manner by an end plug, a metal current feedthrough member of an electrode being accommodated in said end plug, said metal current feedthrough member extending outside the discharge vessel through said end plug, said metal current feedthrough further comprising outside of said vessel a positioning means comprising at least one tongue extending outwardly of the feedthrough member and formed by solely disturbing the outer surface metal of the current feedthrough member, said tongue contacting the external surface of said end plug, and sealing glass disposed around said feedthrough member and contacting the exterior surface of said end plug, whereby the longitudinal position of said electrode is maintained during assembly.
Dependencies are inferred from the claim text.