| 摘要 |
An apparatus for conveying materials behaving substantially as fluids through ducts comprises a cable having a plurality of radially protruding interspaced elements moulded in such a way as to each incorporate the protruding ends of a rivet radially passing through the cable so as to act, in cooperation with the swelling in the cable due to the penetration of the rivet, as a means for preventing the elements from sliding along the cable. The moulded elements are also provided, at the point of incorporation of the cable, with tapered extensions so as to avoid sharp variations in the rigidity of the cable which could give rise to fatigue failure.
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