Tubular Structure and a Method of Manufacturing Thereof
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United States of America Patent
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Issued Date -
Sep 17, 2020
app pub date -
Jun 2, 2020
filing date -
Aug 2, 2016
priority date (Note) -
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status (Latency Note)
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Abstract
Methods and structures are disclosed. An example method includes: rotating a tubular mandrel about a longitudinal axis of the tubular mandrel; depositing a composite material on an inner surface of the tubular mandrel to form a composite tubular member on the inner surface of the tubular mandrel; inserting and expanding an inner expandable mandrel within the composite tubular member to cause the inner expandable mandrel to press the composite tubular member against the inner surface of the tubular mandrel; curing the composite tubular member; removing the inner expandable mandrel; placing a frame within the composite tubular member; and removing the tubular mandrel so as to obtain the composite tubular member with the frame placed therein.
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