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US 8,486,517 B2Granted
Helical textile with uniform thickness
AssigneeCrawford Textile Fabrications, LLC
InventorJames A. Crawford, Jr.
Life of this patent
Estimating the term…
Abstract
A helical textile having a substantially uniform thickness from ID to OD having circumferential warp fibers; non-interlaced radially aligned weft fibers having fiber lengths that may vary with the textile diameter to maintain constant textile thickness, the warp fibers and weft fibers not interlaced together; and non-reinforcing binding yarns securing the warp fibers to the weft fibers, thereby forming a helical textile.
Claims7
A helical textile having a substantially uniform thickness comprising:
- circumferential warp fibers defining a radial textile width from a textile inner diameter to a textile outer diameter;
- non-interlaced radially aligned weft fibers of varying lengths to maintain constant textile thickness, the warp fibers and weft fibers not crimped together;
- and
- non-reinforcing binding yarns securing the warp fibers to the weft fibers with chain stitches knitted across the radial textile width, thereby forming a helical textile.
1 more element
A helical textile made by a process comprising the steps of:
- providing a warp knitting machine having at least one conical take-up roll;
- adjusting weft insertion to insert weft fibers in a repeating pattern of varying lengths;
- warp knitting a helical textile having circumferential warp fibers, a non-interlaced radially aligned weft, and substantially uniform textile thickness, the helical textile defining a radial textile width from a textile inner diameter to a textile outer diameter;
- and
- securing the weft fibers to the circumferential warp with chain stitches knitted across the radial textile width.
2 more elements
Dependencies are inferred from the claim text.