LAMP
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United States of America Patent
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N/A
Issued Date -
Nov 1, 2012
app pub date -
Dec 16, 2010
filing date -
Dec 17, 2009
priority date (Note) -
Abandoned
status (Latency Note)
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Abstract
A thick-walled electroded lamp (11) has molybdenum cup seals (10) attached to both ends. The seals have tungsten electrodes (14) extending into the void (15) formed by the bore of the thick walled tube. Further the seals comprise molybdenum cups (16) having feather edges (17) set in the ends of short thin wall quartz tubes (18) fused to the ends of the thick walled quartz tube (12). The electrodes are brazed to the cups at joints (19). The lamp can be filled with its noble gas and metal halide charge, or other excitable material fill through an auxiliary exhaust tube (20) attached just in front of the cupped seal.
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