Patent US3861175A successfully refreshed from Google Patents.
US3861175A
Expired / Lapsed
US
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Process for knitting two-bar fabrics from three warp thread sets
Assignee: EIDP Inc
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Filing: 1973-06-11
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Granted: 1975-01-21
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Expires: 1993-06-11
Abstract
Abstract This invention relates to a two-bar warp knitted fabric and method of forming the same with three warp thread sets in which two sets of threads are knitted or laid into the fabric with a normal tension to form a firm ground structure while a third set of threads is being knitted by one of the same bars while overfeeding the threads so that the loops of the actual stitch are forced out on the surface of the fabric.
Inventors
- 👤 Robert Clyde Farmer
- 👤 Harold Frederick Hume
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 14:35
CPC Classifications
D; D04; D04B; D04B27/00; D04B27/10; D04B21/00; D04B21/02; D04B23/00; D04B23/08
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
142 words
In a process of producing warp knitted fabrics having loop formations on a warp knitting machine having three sets of warp threads of which two sets are fed with a normal thread feed rate to form a firm structure in the knitted fabric while a third set of warp threads is knitted into the fabric and is constantly overfed relative to feeding for normal stitch formation, each of said sets of threads being fed to operating guide bars of said knitting machine, the improvement comprising feeding one of said two sets to one of two operating guide bars of said knitting machine; feeding the other of said two sets to the other operating guide bar of said knitting machine; and knitting said third set of threads by the same guides of one or the other operating guide bars of said knitting machine.
Claim 2
Dependent Claim
142 words
In a process of producing warp knitted fabrics having loop formations on a warp knitting machine having three sets of warp threads of which two sets are fed with a normal thread feed rate to form a firm structure in the knitted fabric while a third set of warp threads is knitted into the fabric and is constantly overfed relative to feeding for normal stitch formation, each of said sets of threads being fed to operating guide bars of said knitting machine, the improvement comprising feeding one of said two sets to one of two operating guide bars of said knitting machine; feeding the other of said two sets to the other operating guide bar of said knitting machine; and knitting said third set of threads by the same guides of one or the other operating guide bars of said knitting machine.
Claim 3
Dependent Claim
23 words
The process as defined in claim 1, said overfed threads being fed to the guides without twisting or tangling with normally fed threads.
Claim 4
Dependent Claim
21 words
The process as defined in claim 1, the amount of overfeed being controlled from just above zero to over 100 percent.
Claim 5
Dependent Claim
37 words
The process as defined in claim 1, said overfed threads being fed to the guides through a varying path length by a varying tension device to control slack threads at the time of guide bar lateral movement.
References Cited (Backward Citations)
US3254510A
Cited
US3255615A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-01-20 | 1978-07-22 | 1979-01-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-01-20 | 1982-07-22 | 1983-01-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-01-20 | 1986-07-22 | 1987-01-21 | $7700.00 | Window Closed / Lapsed |