Electric lamp and discharge devices – With gas or vapor – Having electrode exterior to envelope
Reexamination Certificate
2006-02-07
2006-02-07
Patel, Ashok (Department: 2879)
Electric lamp and discharge devices
With gas or vapor
Having electrode exterior to envelope
C313S594000, C313S234000
Reexamination Certificate
active
06995513
ABSTRACT:
The invention relates to improvements in high-pressure discharge lamps of the ceramic metal halide type of the Philips MasterColor series having a metal coil wrapped around the discharge vessel and/or at least a portion of the electrode feed through means, and having power ranges of about 150W to about 1000W, wherein the lamp has a metal coil wound around the discharge vessel and/or at least a portion of the electrode feed through means in a first position and in which metal coil the coil position of at least one coil portion, preferably multiple coil portions, and most preferably substantially all of the coil portions of the metal coil are stabilized to be substantially non-relaxed from the first position after exposure to elevated temperature conditions present during operation of the lamp. The metal coil functions as both an ignition aid and for containment in said lamp.
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Verderber, Rudolph writes the article “Industrial Lighting” in “Wiley Encyclopedia of Electrical and Electronics Engineering Online”.
Alderman John C.
Wu Shiming
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