Wire-spiralling machine
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United States of America Patent
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May 30, 2000
Grant Date -
N/A
app pub date -
Apr 21, 1999
filing date -
Aug 22, 1997
priority date (Note) -
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Abstract
A wire-spiralling machine continuously produces a tubular structure comprising a spiral winding, particularly a pressure-armor layer, from two noninterlocking wires of large cross section delivered from two reels of wire and two locking wires delivered from two reels of locking wire. A motorized rotating circular cage carries the four reels of wire and locking wire at its rear, while the downstream face of the cage supports, on two adjustable-inclination plates, two on-board twin-track caterpillars for dragging the wire. These caterpillars are arranged just upstream of guide and/or bend rolls leading the wires towards their respective lay point.
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