Tube fitting with integrated seal
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United States of America Patent
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Mar 22, 2016
Grant Date -
Nov 27, 2014
app pub date -
May 23, 2013
filing date -
May 23, 2013
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
A tube for a fuel injection system having an end form defining a spherical surface to seal against a receiver in fluid tight relation. The tube and end form may be made of steel or stainless steel. The spherical surface includes an integrated seal surface defining layer comprising material bonded to the spherical surface, which has a hardness lower than the hardness of the material of the end form and may comprise copper, copper-nickel alloy, copper alloy, nickel or manganese. In alternative forms, the material is deposited on the end form spherical seal surface by various processes including deposition by heating, using moistening effects, galvanic, evaporation, or any other suitable deposition process.
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