Electric lamp and discharge devices – With gas or vapor – Envelope with particular structure
Reexamination Certificate
2006-01-31
2006-01-31
Patel, Nimeshkumar D. (Department: 2879)
Electric lamp and discharge devices
With gas or vapor
Envelope with particular structure
C313S623000, C313S624000, C313S625000, C313S567000, C313S570000, C313S571000, C313S573000, C313S568000, C313S575000, C445S026000, C445S043000
Reexamination Certificate
active
06992445
ABSTRACT:
Described is a high intensity discharge lamp including a lamp bulb envelope, first and second electrodes, a seal and a fill situated within the lamp bulb envelope. The lamp bulb envelope is composed of single crystal sapphire tubing. The lamp bulb envelope includes end portions and a central portion, the central portion having a greater diameter than the end portions. The end portions may be a cylindrical tube shape and the central portion is a smooth three-dimensional shape. The first and second electrodes extend through opposite ends of the lamp bulb envelope so that at least a portion of each of the electrodes is situated within the lamp bulb envelope. The seal seals each of the first and second electrodes to an inside wall of the corresponding end of the lamp bulb envelope. A voltage is applied to the first and second electrodes to generate an arc plasma therebetween.
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Eastlund Bernard J.
Levis Maurice E.
Fay Kaplun & Marcin LLP
Gem Lighting LLC
Patel Nimeshkumar D.
Roy Sikha
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