LAMP FUSE IN PRESS SEAL CAVITY
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United States of America Patent
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Issued Date -
May 21, 2015
app pub date -
Mar 31, 2014
filing date -
Mar 31, 2014
priority date (Note) -
Abandoned
status (Latency Note)
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Abstract
A lamp (10), such as a rapid thermal processing (“RTP) lamp, is sealed with a press seal (30) that contains a fuse (40). A relatively long press seal region is used that accommodates, in addition to the conventional filament leads to the exterior of the lamp, the fuse as well, the fuse (40) being disposed inside an inert-gas filled void (34) which is formed in the press seal (30), the fuse being thus disposed in an inert environment, such as nitrogen. The void (34) is defined by a bubble (36) formed in the press seal. Alternatively, the void (34) can be defined by an inside region of a glass capillary tube (42) that jackets the fuse and is squeezed into the press seal.
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