Method of obtaining a leakproof connection between a tube and a sleeve
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United States of America Patent
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Aug 4, 1998
Grant Date -
N/A
app pub date -
Feb 17, 1995
filing date -
Feb 25, 1994
priority date (Note) -
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Abstract
A method of obtaining a leakproof connection between a metallic tube having a leak and a metallic sleeve extending over the leak, includes expanding the sleeve being formed of a material having given strength values against an inner wall surface of the tube being formed of a material having strength values greater than the given values. In order to bridge a gap due to spring-back without the aid of an additional component of a shape memory alloy, a sleeve material having strength values lower than those of the material of the tube is used. A leakproof connection is obtained as the result of the greater spring-back of the tube.
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