Self-lubricating ropes useful in the isolation sections of ocean-bottom cables
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United States of America Patent
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Sep 20, 2011
Grant Date -
Oct 1, 2009
app pub date -
Apr 1, 2008
filing date -
Apr 1, 2008
priority date (Note) -
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status (Latency Note)
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Abstract
A rope having an outer jacket made of braided fibers surrounding a PTFE core and a method for making the rope. The rope is useful in high-tension, high-friction applications, such as serving as a stress member in an isolation section of an instrumented ocean-bottom cable. The PTFE core, which may consist of one or more strings of PTFE valve packing material, squeezes through the braided jacket as the rope is deformed in high-stress regions such as around a bollard. The PTFE material squeezed through the outer jacket lubricates the outside of the rope in the high-stress region to lower the friction.
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