Tetraxial fabric and weaving machine for its manufacture
AssigneeD.I.M.A. Ricerche Technologiche S.R.L.
InventorDini Mamiliano
Life of this patent
Estimating the term…
Abstract
A tetraxial fabric and a weaving machine for manufacturing the fabric. The tetraxial fabric is formed by the crisscross of warp yarns, weft yarns, and bias yarns having two different diagonal directions. A first set of warp yarns is overlaid by the weft yarns and, in turn, overlies the bias yarns. A second set of warp yarns, which alternate with the warp yarns in the first set, overlies the weft yarns and is, in turn, overlaid by the bias yarns. Due to the yarn formation, the fabric has a constant isotropy and evenness and can be made with a fill coefficient of up to 100%. The weaving machine for the manufacture of the tetraxial fabric can alternately produce, in the fabric formation area, two sheds between the warp yarns for passing the weft yarns at opposite sides with respect to the bias yarns.
Claims22
A tetraxial fabric, comprising:
- warp yarns, weft yarns, and first bias yarns and second bias yarns, the first and second bias yarns crisscrossing each other, and the warp and weft yarns, along two opposite diagonal directions, wherein a first set of the warp yarns is overlaid by the weft yarns and, in turn, overlies the first and the second bias yarns, and that a second set of the warp yarns, which alternate with and lie parallel to the warp yarns in the first set, overlies the weft yarns and is, in turn, overlaid by the first and the second bias yarns.
A weaving machine for manufacturing fabric having warp yarns, weft yarns, and bias yarns comprising:
- means for guiding the warp yarns toward a fabric formation area;
- means for passing the weft yarns through a shed of the warp yarns in the fabric formation area;
- means for guiding the bias yarns in the fabric formation area such that the bias yarns cross each other and the warp and the weft yarns along two opposite diagonal directions, wherein the means for guiding the warp yarns comprises:
- a first guide member for guiding a first set of the warp yarns;
- and
- a second guide member for guiding a second set of the warp yarns in an offset fashion from the first set of the warp yarns;
- means for providing the first and second guide members at juxtaposed locations to each other;
- means for moving each of the first and second guide members between a rearward position where their respective set of the warp yarns locate to one side relative to the bias yarns and the other set of the warp yarns, and a forward position where their respective set of the warp yarns locate to the opposite side from the bias yarns and the other set of the warp yarns;
- means for forming a first shed for one of the weft yarns between the first set of the warp yarns under the guiding action of the first guide member in the forward position and the second set of the warp yarns under the guiding action of the second guide member in the rearward position;
- and
- means for forming a second shed for another one of the weft yarns between the first set of the warp yarns under the guiding action of the first guide member in the rearward position and the second set of the warp yarns under the guiding action of the second guide member in the forward position.
Dependencies are inferred from the claim text.