Multi-Part Tube And Method Of Assembly
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United States of America Patent
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Issued Date -
May 12, 2011
app pub date -
Dec 19, 2008
filing date -
Dec 21, 2007
priority date (Note) -
Abandoned
status (Latency Note)
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Abstract
A concrete formwork tube, said tube including: an internal lining; an external lining; and two or more complementary mould segments, adapted to be received between said external and internal lining; each mould segment having an inner face and an outer face; said mould segments, when assembled and substantially restrained by the external lining from relative movement, defining a moulding cavity open towards an upper and a lower end of the formwork; and at least one locking segment, said locking segment adapted to be disposed between two of said mould segments, thereby to tighten the fit of the assembled mould segments inside the external lining.
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