Vacuum package tubeless enclosure with self-welded flanges
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United States of America Patent
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-
Feb 7, 1995
Grant Date -
N/A
app pub date -
Aug 18, 1993
filing date -
Aug 18, 1993
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A vacuum package assembly (20) is prepared by self-welding the flanges (32 and 43) of two housings (28 and 36) together under an applied pressure, while the housings (28 and 36) and any enclosed structure or device are contained within an evacuated enclosure. The flanges (32 and 43) are preferably made of copper, with their respective self-welding members (34 and 46) specially prepared to enhance self-welding performance. The preferred treatment for the self-welding members (34 and 46) is to deposit a thin layer of nickel onto the self-welding members (34 and 46 ), deposit a thin layer of gold over the nickel, and heat the bonding member to elevated temperature to interdiffuse the gold into the self-welding member (34 and 46 ).
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Cited Art Landscape
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