Electric lamp and discharge devices – With gas or vapor – Having electrode lead-in or electrode support sealed to...
Reexamination Certificate
2010-01-28
2011-12-06
Williams, Joseph L (Department: 2889)
Electric lamp and discharge devices
With gas or vapor
Having electrode lead-in or electrode support sealed to...
C313S570000, C313S331000
Reexamination Certificate
active
08072145
ABSTRACT:
An extra high pressure mercury lamp that includes an arc tube, which includes a light emission section enclosing 0.2 mg/mm3or more of mercury, sealing sections that respectively extend from both ends of the light emission section, a pair of electrodes that face each other in the light emission section, wherein an electrode axis portion of each electrode is held by the sealing portion, and a metallic foil that is buried in the sealing section and that is electrically connected with the electrode axis portion, wherein the metallic foil has a covering portion fixed to the electrode axis portion so as to roll up the electrode axis portion; an extended portion that extends towards the outside of a tube axis without being connected with the electrode axis portion; and a main body portion that extends from the extended portion.
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Kasaishi Shuki
Kumada Toyohiko
Sugihara Nobuhiko
Tsukamoto Takuya
Rader & Fishman & Grauer, PLLC
Ushio Denki Kabushiki Kaisha
Williams Joseph L
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