US4909049A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Bielastic, warp-knit fabric and its production
Assignee: Bayer AG
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Filing: 1988-11-29
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Granted: 1990-03-20
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Expires: 2008-11-29
Abstract
Abstract A bielastic warp-knit fabric with balanced behavior of the elastic forces in the longitudinal and transverse directions is obtained by guiding elasthane yarn as weft thread under the needle points in the tuck or laying position during the stitch-forming process, so that loops are formed during knocking-over.
Inventors
- 👤 Harald Baesgen
- 👤 Helmut Schillings
- 👤 Ernst Berg
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 05:26
CPC Classifications
D; D04; D04B; D04B21/00; D04B21/14; D04B21/18
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
136 words
A process for the production of a bielastic, warp-knit fabric in a warp knitting machine, said fabric comprising elasthane yarns and hard fiber yarns wherein loops of elasthane yarn are bound horizontally as weft thread into stitches of ground warp knit fabric of the hard fiber yarns and wherein the hard fiber yarns cover the elasthane yarns on both sides of the fabric said process comprising feeding said hard fiber yarn with a guide bar into the hooks of the needles of a warp knitting machine, feeding said elasthane weft yarn horizontally across and into the hooks of all said needles, knitting together said hard fiber yarns and elasthane yarns simultaneously into stitches forming a bielastic warp knit fabric, whereby the elasthane yarns are bound horizontally as weft knit stitches into the warp knit ground fabric.
Claim 2
Dependent Claim
136 words
A process for the production of a bielastic, warp-knit fabric in a warp knitting machine, said fabric comprising elasthane yarns and hard fiber yarns wherein loops of elasthane yarn are bound horizontally as weft thread into stitches of ground warp knit fabric of the hard fiber yarns and wherein the hard fiber yarns cover the elasthane yarns on both sides of the fabric said process comprising feeding said hard fiber yarn with a guide bar into the hooks of the needles of a warp knitting machine, feeding said elasthane weft yarn horizontally across and into the hooks of all said needles, knitting together said hard fiber yarns and elasthane yarns simultaneously into stitches forming a bielastic warp knit fabric, whereby the elasthane yarns are bound horizontally as weft knit stitches into the warp knit ground fabric.
References Cited (Backward Citations)
US3572058A
Cited
US3911698A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1993-03-19 | 1993-09-18 | 1994-03-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1997-03-19 | 1997-09-18 | 1998-03-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2001-03-19 | 2001-09-18 | 2002-03-20 | $7700.00 | Window Closed / Lapsed |