UMBILICAL
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United States of America Patent
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Issued Date -
Jan 22, 2015
app pub date -
Feb 28, 2013
filing date -
Mar 1, 2012
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Abstract
An umbilical comprising an outer sheath, a core enclosed by the outer sheath and comprising a plurality of helically wound umbilical components, and a tape wound between the outer sheath and the core, wherein the tape comprises a plurality of rigid elements adapted to press into or against the outer sheath and the core when subject to loading. By combining a plurality of rigid elements with a tape, the present invention is able to increase the friction between the core and its outer sheath as part of an existing manufacturing step of adding a final tape or band around the core prior to adding the outer sheath. This particular assists steel tube umbilicals being vertically laid using VLS at deep water depths.
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