Assembly for forming a ceramic arc discharge vessel and method of manufacture
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United States of America Patent
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Jan 5, 2010
Grant Date -
Mar 6, 2008
app pub date -
Aug 29, 2006
filing date -
Aug 29, 2006
priority date (Note) -
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Abstract
An assembly for forming a hollow, ceramic arc discharge vessel for high-intensity discharge (HID) lamps is described wherein a means for self-alignment of two molded sections is provided. In particular, the sealing surface of one section of the arc discharge vessel is provided with a convex surface and the sealing surface of the other section is provided with a concave surface. The radius of the convex sealing surface is smaller than the radius of the concave sealing surface so that the sections may self-align during joining, preferably without gas entrapment in the seal.
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