High pressure sodium discharge lamps with hydrogen getter

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United States of America Patent

PATENT NO 4806828
SERIAL NO

07047274

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Abstract

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An arc tube (13) for a high pressure sodium discharge lamp (10) contains a quantity of a getter materal which comprises an alloy of titanium and niobium metal. The alloy is in the form of a coiled wire (31) which is wound on a tungsten electrode shank (29). The wire may have a sheath of niobium metal.

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Patent Owner(s)

Patent OwnerAddressTotal Patents
THORN EMI PLC, A COMPANY OF GREAT BRITAINLONDON2

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Hurst, Derek P Leicestershire, GB2 2 8

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