Method of making a lead-in mount and seal

Number of patents in Portfolio can not be more than 2000

United States of America Patent

PATENT NO 5011444
SERIAL NO

07561560

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ATTORNEY / AGENT: (SPONSORED)

Importance

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Abstract

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A thermal device, such as a glow discharge starter, includes an hermetically sealed envelope containing an ionizable medium, a bimetallic electrode having a bimetallic element associated therewith, and a counter electrode. A mount sealed in the envelope includes a glass stem having a disk-shaped portion extending substantially across the envelope and a longitudinally-extending planar portion. The transverse portion of the mount assists in centering the electrodes within the envelope and preventing the bimetallic element from oxidizing during the manufacturing process when the mount is sealed to the envelope. Preferably, the transverse portion is disk-shaped having a radius within the range of from about 89 to 93 percent of the internal radius of the envelope. The defined thickness of the planar portion of the glass stem allows rapid transfer of heat during sealing so that the planar portion can effectively be sealed to the envelope without developing seal cracks.

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Patent Owner(s)

Patent OwnerAddress
FLOWIL INTERNATIONAL (HOLDING) B V"ATRIUM" BUILDING 2ND FLOOR STRAWINSKYLAAN 3037 1077 ZX AMSTERDAM THE

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Barakitis, Nikolaos Salem, MA 20 112

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