Device for limiting propagation of deformation in a wound double-walled tube
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United States of America Patent
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Nov 25, 2003
Grant Date -
N/A
app pub date -
Dec 13, 2001
filing date -
Jul 2, 1999
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A device for eliminating propagation of a buckle in the outer wall of a double-walled tube, where the double-walled tube comprises an outer pipe, an inner pipe and an annular space between them in which the deformable element is disposed with the external surface of the deformable element in contact with the internal wall of the outer pipe and the interior of the deformable element being spaced outward from the inner pipe and having a sheath on the interior of the deformable element. The deformable element may be a wound wire, a profiled wire, an interlocked wire with interlocked turns, a non-interlocked wire, a spring with turns urged outwardly or reinforcement with turns urged outwardly and bearing blocks in the annular space on the inner pipe for at least one end of the reinforcement.
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