Strand, structural cable and method for manufacturing the strand
AssigneeSoletanche Freyssinet
InventorsErik Mellier, Stéphane Joye
Life of this patent
Estimating the term…
Abstract
A strand (3) comprising a group of twisted threads (8) and arranged so as to have, over a first part (1) of its length: a sheath (4) containing the group of twisted threads, and a flexible filling product (7) filling a peripheral interstice (6) located between the inner face of the sheath and the periphery of the group of twisted threads, and, over a second part (2) of its length, which is separate from the first part: a material (9) covering the periphery of the group of twisted threads, said material adhering to the twisted threads of the group.
Claims12
A strand comprising a group of twisted wires, said strand comprising:
- over a first part of a length of said strand:
- a sheath that contains the group of twisted wires, and a flexible filling product that fills a peripheral void located between an inner face of the sheath and a periphery of the group of twisted wires, and
- over a second part of the length of said strand, the second part being distinct from the first part:
- a material covering the periphery of the group of twisted wires, said material adhering to the twisted wires of the group, the sheath being interrupted between the first and second parts.
A structural cable comprising:
- a bundle of strands,
- wherein each strand comprises a respective group of twisted wires, comprising:
- over a first part of a length of said strand:
- a respective sheath that does not extend beyond said first part and that contains said group of twisted wires, and a flexible filling product that fills a peripheral void located between an inner face of said sheath and a periphery of said group of twisted wires, and
- over a second part of the length of said strand, the second part being distinct from the first part:
- a material covering the periphery of the group of twisted wires, said material adhering to the twisted wires of the group;
- and
- wherein the bundle of strands is arranged so that said second parts of the strands of the bundle are substantially aligned with each other for at least a majority of the strands of the bundle.
A method of manufacturing a strand, wherein said strand includes a group of twisted wires and initially comprises, over substantially an entire length of said strand, a sheath containing the group of twisted wires and a flexible filling product that fills in a peripheral void located between an inner face of the sheath and a periphery of the group of twisted wires, said method comprising:
- leaving a first part of the length of the strand unchanged,
- locally removing the sheath and at least a portion of the flexible filing product present at the periphery of the group of twisted wires in a second part of the length of the strand, distinct from the first part, and
- covering the periphery of the group of twisted wires, in the second part of the length of the strand, with a material adhering to the twisted wires of the group.
Dependencies are inferred from the claim text.