US3910075A
Expired / Lapsed
US
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Warp knit elastic fabric
Assignee: Deering Milliken Research Corp
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Filing: 1974-09-03
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Granted: 1975-10-07
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Expires: 1994-09-03
Abstract
Abstract A warp knitted elastic fabric having a ground construction of a pair of sets of relatively inelastic yarns formed into wales and courses of single yarn stitch loops with one set of yarns forming single yarn stitch loops in alternate courses with the stitch loops of each yarn of the one set occurring in the same wale and the other set of yarns forming single yarn stitch loops in the courses intervening between the alternate courses, each yarn of the other set forming single yarn stitch loops alternately in two adjacent wales, and a set of relatively elastic yarns laid into the ground construction between and generally parallel to the wales such that yarns of the one set are folded about the elastic yarns to cover and maintain the elastic yarns in the ground construction.
Inventors
- 👤 Bettie E Holliday
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 21:30
CPC Classifications
D; D04; D04B; D04B21/00; D04B21/14; D04B21/18
Claims Analysis
Total Claims: 28
Claim 1
Independent Claim
193 words
A warp knitted elastic fabric, comprising: a knitted ground construction comprising a pair of sets of relatively inelastic warp yarns formed into a plurality of wales and courses of single yarn stitch loops, one set of relatively inelastic warp yarns formed into single yarn stitch loops in alternate courses with each yarn of said one set formed into stitch loops in only one wale, and the other set of relatively inelastic warp yarns formed into single yarn stitch loops in the courses intervening between said alternate courses with each yarn of said other set formed into stitch loops alternately in two adjacent wales; and a set of relatively elastic threads laid-into the ground construction generally parallel to and between the wales with the yarns of said one set of relatively inelastic yarns extending about the laid-in relatively elastic yarns so that a relatively elastic yarn lies between the base portion of each of the stitch loops and the laps which are connected to each stitch loop of the yarns of said one set of relatively inelastic yarns, so that the inlaid relatively elastic yarns are substantially covered and maintained in the ground construction.
Claim 2
Dependent Claim
193 words
A warp knitted elastic fabric, comprising: a knitted ground construction comprising a pair of sets of relatively inelastic warp yarns formed into a plurality of wales and courses of single yarn stitch loops, one set of relatively inelastic warp yarns formed into single yarn stitch loops in alternate courses with each yarn of said one set formed into stitch loops in only one wale, and the other set of relatively inelastic warp yarns formed into single yarn stitch loops in the courses intervening between said alternate courses with each yarn of said other set formed into stitch loops alternately in two adjacent wales; and a set of relatively elastic threads laid-into the ground construction generally parallel to and between the wales with the yarns of said one set of relatively inelastic yarns extending about the laid-in relatively elastic yarns so that a relatively elastic yarn lies between the base portion of each of the stitch loops and the laps which are connected to each stitch loop of the yarns of said one set of relatively inelastic yarns, so that the inlaid relatively elastic yarns are substantially covered and maintained in the ground construction.
Claim 3
Dependent Claim
55 words
The elastic fabric of claim 1 wherein the stitch loops of the yarns of said other set of warp yarns are displaced generally parallel to the wales throughout the fabric, and the stitch loops of the yarn of said one set of warp yarns are disposed more nearly parallel to the courses throughout the fabric.
Claim 4
Dependent Claim
19 words
fully threading a middle guide bar of a warp knitting machine with a second plurality of relatively inelastic yarns;
Claim 5
Dependent Claim
19 words
fully threading a middle guide bar of a warp knitting machine with a second plurality of relatively inelastic yarns;
Claim 6
Dependent Claim
19 words
fully threading a back guide bar of a warp knitting machine with a plurality or relatively elastic yarns; and
Claim 7
Dependent Claim
19 words
fully threading a back guide bar of a warp knitting machine with a plurality or relatively elastic yarns; and
Claim 8
Dependent Claim
41 words
The elastic fabric of claim 1, wherein lap portions of the yarns of said one set of relativelY inelastic warp yarns extend diagonally across each of the wales in which a yarn of said one set of warp yarns is knitted.
Claim 9
Dependent Claim
64 words
The elastic fabric of claim 3, wherein said lap portions of the yarns of said one set extend in a direction approximately parallel to the lap portions of the yarns of said other set, both said lap portions being exposed on the technical back side of said fabric thereby virtually completely covering said relatively elastic yarns on the technical back side of said fabric.
Claim 10
Dependent Claim
50 words
operating said warp knitting machine, said guide bars feeding yarns to the needle bar of said machine according to the combination of bar movement patterns: front bar: 4-2, 0-0, 2-4, 6-6 middle bar: 2-2, 2-4, 2-2, 2-0 back bar: 0-0, 2-2, 4-4, 2-2 said patterns being given in Raschel designations.
Claim 11
Dependent Claim
50 words
operating said warp knitting machine, said guide bars feeding yarns to the needle bar of said machine according to the combination of bar movement patterns: front bar: 4-2, 0-0, 2-4, 6-6 middle bar: 2-2, 2-4, 2-2, 2-0 back bar: 0-0, 2-2, 4-4, 2-2 said patterns being given in Raschel designations.
Claim 12
Dependent Claim
15 words
The fabric of claim 1 wherein said relatively elastic yarn is bare relatively elastic yarn.
Claim 13
Dependent Claim
13 words
The fabric of claim 1 wherein said relatively elastic yarn is bare spandex.
Claim 14
Dependent Claim
86 words
The elastic fabric of claim 1 wherein each of the yarns of said one set of relatively inelastic yarns is present in the knitted fabric in the pattern 4-2, 0-0, 2-4, 6-6; each of the yarns of said other set of relatively inelastic yarns is present in the knitted fabric in the pattern 2-2, 2-4, 2-2, 2-0; and each of the set of laid-in relatively elastic yarns is present in the fabric in the pattern 0-0, 2-2, 4-4, 2-2; said patterns being given in Raschel designations.
Claim 15
Dependent Claim
31 words
The elastic fabric of claim 7, wherein at least one of said sets of relatively inelastic yarns comprises nylon yarns, and said set of relatively elastic yarns comprises bare spandex yarns.
Claim 16
Independent Claim
13 words
A method of manufacturing a warp knitted elastic fabric, comprising the steps of:
Claim 17
Independent Claim
13 words
A method of manufacturing a warp knitted elastic fabric, comprising the steps of:
Claim 18
Dependent Claim
16 words
The method of claim 9 wherein the back guide bar is threaded with bare spandex yarns.
Claim 19
Dependent Claim
18 words
The method of claim 10, wherein one of the front or middle bars is threaded with nylon yarns.
Claim 20
Independent Claim
215 words
A method of knitting a warp knit elastic fabric, comprising: knitting a pair of sets of relatively inelastic yarns forming a plurality of courses and wales of single yarn stitch loops in a ground fabric construction by knitting one set of relatively inelastic yarns into single yarn stitch loops in alternate courses, forming each yarn of said one set into said stitch loops in only one wale of the resultant fabric, and by knitting another set of relatively inelastic yarns into single yarn stitch loops in the courses intervening between said alternate courses, forming each yarn of said another set into stitch loops alternately in two adjacent wales, and simultaneously laying a third set of relatively elastic yarns into the ground construction being formed by said pair of sets of relatively inelastic yarns, laying each of said relatively elastic yarns between two wales of the ground construction; with the yarns of said one set of inelastic yarns being knitted to extend about each relatively elastic yarn so that a relatively elastic yarn passes between the base portion of each of the stitch loops and the laps connected to each said stitch loop of the yarns of said set of relatively elastic yarns, thereby substantially covering and maintaining said relatively elastic yarns in the resultant fabric.
Claim 21
Independent Claim
215 words
A method of knitting a warp knit elastic fabric, comprising: knitting a pair of sets of relatively inelastic yarns forming a plurality of courses and wales of single yarn stitch loops in a ground fabric construction by knitting one set of relatively inelastic yarns into single yarn stitch loops in alternate courses, forming each yarn of said one set into said stitch loops in only one wale of the resultant fabric, and by knitting another set of relatively inelastic yarns into single yarn stitch loops in the courses intervening between said alternate courses, forming each yarn of said another set into stitch loops alternately in two adjacent wales, and simultaneously laying a third set of relatively elastic yarns into the ground construction being formed by said pair of sets of relatively inelastic yarns, laying each of said relatively elastic yarns between two wales of the ground construction; with the yarns of said one set of inelastic yarns being knitted to extend about each relatively elastic yarn so that a relatively elastic yarn passes between the base portion of each of the stitch loops and the laps connected to each said stitch loop of the yarns of said set of relatively elastic yarns, thereby substantially covering and maintaining said relatively elastic yarns in the resultant fabric.
Claim 22
Dependent Claim
108 words
The method of claim 11, wherein said one set of relatively inelastic yarns is knitted so that the laps thereof are exposed on the technical back side of the resultant fabric and extend diagonally across each wale in which one yarn of saiD one set of yarns is knitted, and laps extending in a direction approximately parallel to the lap portions of the yarns of said another set of relatively inelastic yarns which are also knitted so that its lap portions are exposed on the technical back side of the fabric, thereby virtually completely covering said relatively elastic yarns on the technical back side of the resultant fabric.
Claim 23
Dependent Claim
16 words
The method of claim 12, wherein said set of relatively elastic yarns comprises bare spandex yarns.
Claim 24
Dependent Claim
19 words
The method of claim 12, wherein said relatively elastic yarns are elastically elongated before being laid-into the ground construction.
Claim 25
Dependent Claim
134 words
The method of claim 11, wherein said fabric is knit on a warp knitting machine, and said one set of yarns is supplied to the knitting needles of said machine through a first guide bar fully threaded across an approximate desired fabric width, said another set of yarns is supplied to said knitting needles through a second guide bar fully threaded across said approximate fabric width, and said third set of yarns is supplied to said knitting needles through a third guide bar fully threaded across said approximate fabric width and said sets are moved with respect to said needles in accordance with the combination of bar movement patterns: first bar: 4-2, 0-0, 2-4, 6-6 second bar: 2-2, 2-4, 2-2, 2-0 third bar: 0-0, 2-2, 4-4, 2-2 said patterns being given in Raschel designations.
Claim 26
Dependent Claim
18 words
The method of claim 16 wherein the yarns supplied through the third guide bar comprise bare spandex yarns.
Claim 27
Dependent Claim
24 words
The method of claim 16, wherein the third set of relatively elastic yarns are elastically elongated before being supplied through the third guide bar.
Claim 28
Dependent Claim
22 words
The method of claim 17, wherein one of said one set or said another set of relatively inelastic yarns comprises nylon yarns.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-10-06 | 1979-04-07 | 1979-10-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-10-06 | 1983-04-07 | 1983-10-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-10-06 | 1987-04-07 | 1987-10-07 | $7700.00 | Window Closed / Lapsed |