US4378683A
Expired / Lapsed
US
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Transversely stretchable stringer tape for slide fasteners
Assignee: YKK Corp
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Filing: 1981-03-12
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Granted: 1983-04-05
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Expires: 2001-03-12
Abstract
Abstract A warp-knit stringer tape, for slide fasteners, including a pair of transversely non-stretchable longitudinal edge portions and a transversely stretchable intermediate portion extending therebetween. The stringer tape has a knit ground structure composed of chain stitches and tricot stitches. At the stretchable intermediate portion, the tricot stitches are formed of a plurality of elastic yarns such as stretch yarns, while the chain stitches are formed of a plurality of non-elastic yarns such as multifilament yarns. At least one elastic weft yarn is laid in the knit ground structure at the stretchable intermediate portion.
Inventors
- 👤 Yoshio Matsuda
- 👤 Yoshiharu Yamaguchi
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 04:57
CPC Classifications
A; A44; A44B; A44B19/00; A44B19/24; A44B19/34; A44B19/343; D; D04; D04B; D04B21/00; D04B21/14; D04B21/16; D10; D10B; D10B2501/00; D10B2501/06; D10B2501/063; D10B2501/0631; Y; Y10; Y10T; Y10T24/00; Y10T24/25; Y10T24/2518; Y10T24/2521
Claims Analysis
Total Claims: 22
Claim 1
Independent Claim
177 words
A transversely stretchable stringer tape for a slide fastener having a pair of rows of coupling elements, comprising: (a) an elongate warp-knit web having a plurality of longitudinal wales disposed between a pair of longitudinal edges, said web including a pair of marginal portions extending along said pair of longitudinal edges, respectively, and an intermediate portion extending between said marginal portions, at least one of said marginal portions being non-stretchable for supporting therealong one coupling element row of the slide fastener; (b) said intermediate portion being transversely stretchable and including a plurality of yarns (hereafter called second yarns) forming a knit ground structure containing stitch loops, and at least one elastic yarn (hereafter called third yarn) laid in said knit ground structure and extending transversely across a plurality of adjacent ones of said wales, said second yarns being elastic and each extending across at least an adjacent pair of said wales, the number of the wales across which each said second yarn extends being smaller than the number of the wales across which said third yarn extends.
Claim 2
Dependent Claim
177 words
A transversely stretchable stringer tape for a slide fastener having a pair of rows of coupling elements, comprising: (a) an elongate warp-knit web having a plurality of longitudinal wales disposed between a pair of longitudinal edges, said web including a pair of marginal portions extending along said pair of longitudinal edges, respectively, and an intermediate portion extending between said marginal portions, at least one of said marginal portions being non-stretchable for supporting therealong one coupling element row of the slide fastener; (b) said intermediate portion being transversely stretchable and including a plurality of yarns (hereafter called second yarns) forming a knit ground structure containing stitch loops, and at least one elastic yarn (hereafter called third yarn) laid in said knit ground structure and extending transversely across a plurality of adjacent ones of said wales, said second yarns being elastic and each extending across at least an adjacent pair of said wales, the number of the wales across which each said second yarn extends being smaller than the number of the wales across which said third yarn extends.
Claim 3
Dependent Claim
21 words
A stringer tape according to claim 1, each said second yarn extending across less than five adjacent ones of said wales.
Claim 4
Dependent Claim
25 words
A stringer tape according to claim 1, said intermediate portion further including a plurality of yarns (hereafter called first yarns) knit in said ground structure.
Claim 5
Dependent Claim
27 words
A stringer tape according to claim 3, said knit ground structure comprising chain stitches formed of said first yarns and tricot yarns formed of said second yarns.
Claim 6
Dependent Claim
15 words
A stringer tape according to claim 3, said first yarns having a pattern of 1-0/0-1.
Claim 7
Dependent Claim
15 words
A stringer tape according to claim 1, said second yarns having a pattern of 1-2/1-0.
Claim 8
Dependent Claim
16 words
A stringer tape according to claim 1, said laid-in third yarn having a pattern of 0-0/11-11.
Claim 9
Dependent Claim
16 words
A stringer tape according to claim 1, said laid-in third yarn having a pattern of 0-0/6-6.
Claim 10
Dependent Claim
37 words
A stringer tape according to claim 1, said non-stretchable portion of said web including a plurality of fourth yarns knit in a pattern of 1-0/0-1, and a plurality of fifth yarns knit in a pattern of 1-2/1-0.
Claim 11
Dependent Claim
40 words
A stringer tape according to claim 9, said non-stretchable portion of said web further including a plurality of transversely extending sixth yarns having a pattern of 0-0/4-4, and a plurality of longitudinally extending seventh yarns having a pattern of 0-0/1-1.
Claim 12
Dependent Claim
24 words
A stringer tape according to claim 4, said first yarns having a pattern of 0-2/0-2/0-2/0-2, and said second yarns having a pattern of 2-4/2-2/2-0/2-2.
Claim 13
Dependent Claim
16 words
A stringer tape according to claim 11, said laid-in third yarn having a pattern of 0-0/20-20/20-20/0-0.
Claim 14
Dependent Claim
16 words
A stringer tape according to claim 11, said laid-in third yarn having a pattern of 0-0/0-0/20-20/20-20.
Claim 15
Dependent Claim
37 words
A stringer tape according to claim 11, said non-stretchable portion of said web including a plurality of fourth yarns knit in a pattern of 0-2/0-0/0-2/2-2, and a plurality of fifth yarns knit in a pattern of 2-4/2-2/2-0/2-2.
Claim 16
Dependent Claim
27 words
A stringer tape according to claim 14, said non-stretchable portion of said web further including a plurality of transversely extending sixth yarns having a pattern of 0-0/4-4/8-8/4-4.
Claim 17
Dependent Claim
14 words
A stringer tape according to claim 1, said elastic second yarns comprising stretch yarns.
Claim 18
Dependent Claim
15 words
A stringer tape according to claim 1, said elastic third yarn comprising a spandex yarn.
Claim 19
Dependent Claim
13 words
A stringer tape according to claim 3, said first yarns comprising multifilament yarns.
Claim 20
Dependent Claim
15 words
A stringer tape according to claim 9, said fourth and fifth yarns comprising multifilament yarns.
Claim 21
Dependent Claim
20 words
A stringer tape according to claim 9, said fourth yarns comprising multifilament yarns and said fifth yarns comprising stretch yarns.
Claim 22
Dependent Claim
15 words
A stringer tape according to claim 11, said sixth and seventh yarns comprising multifilament yarns.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1986-04-04 | 1986-10-04 | 1987-04-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1990-04-04 | 1990-10-04 | 1991-04-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1994-04-04 | 1994-10-04 | 1995-04-05 | $7700.00 | Window Closed / Lapsed |