Patent US3864944A successfully refreshed from Google Patents.
US3864944A
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Method for making a double faced warp knit fabric
Assignee: Union Carbide Corp
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Filing: 1973-08-20
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Granted: 1975-02-11
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Expires: 1993-08-20
Abstract
Abstract A double faced warp knit fabric is made on a double needle bar in each successive course of each pair of opposite wales of each opposite face warp knitting machine having a common guide bar and common chain stitch thread forming chain stitches on one needle bar and then on the other needle bar to bind and unite the two knit structures into a unitary double faced fabric. The common chain stitch thread may also be looped coursewise around adjacent chain stitches in adjacent wales to not only serve as the body yarn for both faces but to also serve as the weft portions of a simulated weave, in cooperation with a pair of inlaid warp yarns in each knit structure.
Inventors
- 👤 George E Jackson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 12:34
CPC Classifications
D; D04; D04B; D04B21/00; D04B21/14; D04B23/00; D04B23/02; D10; D10B; D10B2403/00; D10B2403/02; D10B2403/024; D10B2403/0241; D10B2403/02411
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
144 words
The method of making a double faced, warp knit, fabric by means of a double needle bar multiple guide bar warp knitting machine which comprises the steps of: warp knitting two fabrics back to back on said two needle bars, with each fabric having a chain stitch knitted structure, guiding a set of common, chain stitch yarns back and forth between said structures at each course and in each wale to bind said structures together and knitting said common chain stitch yarns to form chain stitch pillars in each said structure with each said common chain stitch yarn forming each successive chain stitch in each pair of opposite successive chain stitches in each pair of opposite wales in each opposite face of said fabric, and interconnecting said pillars in each said structure to provide strength and stability thereto in both warpwise and coursewise directions.
Claim 2
Independent Claim
144 words
The method of making a double faced, warp knit, fabric by means of a double needle bar multiple guide bar warp knitting machine which comprises the steps of: warp knitting two fabrics back to back on said two needle bars, with each fabric having a chain stitch knitted structure, guiding a set of common, chain stitch yarns back and forth between said structures at each course and in each wale to bind said structures together and knitting said common chain stitch yarns to form chain stitch pillars in each said structure with each said common chain stitch yarn forming each successive chain stitch in each pair of opposite successive chain stitches in each pair of opposite wales in each opposite face of said fabric, and interconnecting said pillars in each said structure to provide strength and stability thereto in both warpwise and coursewise directions.
Claim 3
Dependent Claim
84 words
A method as specified in claim 1, plus the steps of: guiding said chain stitch yarns coursewise on each opposite face, to loop around an adjacent chain stitch and form a ''''weft'''' portion of a simulated weave, and inlaying a set of warp yarns into each said face to form the ''''warps'''' of said simulated weave, whereby each chain stitch yarn is locked into a stitch on each face and into an adjacent stitch on the same face to prevent running thereof upon breakage.
Claim 4
Independent Claim
188 words
The method of making a double faced, warp knit fabric by means of a double needle bar, multiple guide bar warp knitting machine which comprises the steps of: warp knitting two fabrics back to back on said two needle bars, with each fabric having a chain stitch knitted structure, guiding a set of common chain stitch yarns back and forth between said structures at each course and in each wale to bind said structures together, knitting said common chain stitch yarns to form chain stitch pillars in each said structure, with each said common chain stitch yarn forming each successive stitch in each pair of opposite wales in each opposite face of said fabric, guiding said common chain stitch yarns coursewise, on each opposite face, to loop around an adjacent chain stitch and form a weft portion of a simulated weave, and inlaying a set of warp yarns into each said face to form the ''''warps'''' of said simulated weave, whereby each chain stitch yarn is locked into a stitch on each face and into an adjacent stitch on the same face to prevent running thereof upon breakage.
Claim 5
Independent Claim
188 words
The method of making a double faced, warp knit fabric by means of a double needle bar, multiple guide bar warp knitting machine which comprises the steps of: warp knitting two fabrics back to back on said two needle bars, with each fabric having a chain stitch knitted structure, guiding a set of common chain stitch yarns back and forth between said structures at each course and in each wale to bind said structures together, knitting said common chain stitch yarns to form chain stitch pillars in each said structure, with each said common chain stitch yarn forming each successive stitch in each pair of opposite wales in each opposite face of said fabric, guiding said common chain stitch yarns coursewise, on each opposite face, to loop around an adjacent chain stitch and form a weft portion of a simulated weave, and inlaying a set of warp yarns into each said face to form the ''''warps'''' of said simulated weave, whereby each chain stitch yarn is locked into a stitch on each face and into an adjacent stitch on the same face to prevent running thereof upon breakage.
References Cited (Backward Citations)
US3555853A
Cited
US3566621A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-02-10 | 1978-08-12 | 1979-02-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-02-10 | 1982-08-12 | 1983-02-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-02-10 | 1986-08-12 | 1987-02-11 | $7700.00 | Window Closed / Lapsed |