US4123830A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Slide fastener stringer
Assignee: YKK Corp
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Filing: 1977-08-22
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Granted: 1978-11-07
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Expires: 1997-08-22
Abstract
Abstract A slide fastener stringer includes a reinforcing cord on and along one edge of a stringer tape, the reinforcing cord having a central core and a warp-knit tube surrounding the core and extending longitudinally therewith. The warp-knit tube is made on a circular knitting machine and formed with a plurality of knitting threads having needle loops angularly spaced around the core and sinker loops extending circumferentially across and over the core and between the needle loops. The needle and sinker loops are urged into fastening or clinching engagement with the core.
Inventors
- 👤 Yoshio Matsuda
- 👤 Ryuichi Murasaki
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 16:13
CPC Classifications
A; A44; A44B; A44B19/00; A44B19/10; A44B19/12; A44B19/24; A44B19/34; D; D04; D04B; D04B21/00; D04B21/20; D04B21/202; D04B25/00; D04B25/02; D10; D10B; D10B2501/00; D10B2501/06; D10B2501/063; D10B2501/0631; Y; Y10; Y10T; Y10T24/00; Y10T24/25; Y10T24/2539; Y10T24/2548
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
153 words
A slide fastener stringer comprising a stringer tape having a reinforcing cord on and along its one edge, and a series of fastener elements mounted on and along said reinforcing cord, said reinforcing cord including a central core and a warp-knitted tube surrounding said central core and extending longitudinally therewith, said warp-knitted tube including a plurality of knitting threads each having respective needle loops alternately circumferentially spaced around said central core and sinker loops extending circumferentially across and over a peripheral area of said central core and between said circumferentially spaced needle loops, said needle loops of one of the knitting threads being interlooped with those of another knitting thread, the peripheral areas of said central core on which the sinker loops of said interlooped knitting threads are disposed having respective portions circumferentially oppositely spaced from each other, whereby said needle and sinker loops are urged into fastening engagement with said central core.
Claim 2
Dependent Claim
153 words
A slide fastener stringer comprising a stringer tape having a reinforcing cord on and along its one edge, and a series of fastener elements mounted on and along said reinforcing cord, said reinforcing cord including a central core and a warp-knitted tube surrounding said central core and extending longitudinally therewith, said warp-knitted tube including a plurality of knitting threads each having respective needle loops alternately circumferentially spaced around said central core and sinker loops extending circumferentially across and over a peripheral area of said central core and between said circumferentially spaced needle loops, said needle loops of one of the knitting threads being interlooped with those of another knitting thread, the peripheral areas of said central core on which the sinker loops of said interlooped knitting threads are disposed having respective portions circumferentially oppositely spaced from each other, whereby said needle and sinker loops are urged into fastening engagement with said central core.
Claim 3
Dependent Claim
37 words
A slide fastener stringer according to claim 1, said needle loops being angularly spaced 90° apart from each other circumferentially around said central core, and said sinker loops extending between diametrically opposed ones of said needle loops.
Claim 4
Dependent Claim
40 words
A slide fastener stringer according to claim 1, said needle loops being angularly spaced 90° apart from each other circumferentially around said central core, and said sinker loops extending between those of said needle loops which are angularly spaced 270°.
Claim 5
Dependent Claim
37 words
A slide fastener stringer according to claim 1, said needle loops being angularly spaced 60° apart from each other circumferentially around said central core, and said sinker loops extending between diametrically opposed ones of said needle loops.
Claim 6
Dependent Claim
30 words
A slide fastener stringer according to claim 1, said sinker loops extending between said needle loops being substantially in the shape of 8 when said reinforcing cord is viewed cross-sectionally.
References Cited (Backward Citations)
US3939671A
Cited
DE2546962A1
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1981-11-06 | 1982-05-08 | 1982-11-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-11-06 | 1986-05-08 | 1986-11-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-11-06 | 1990-05-08 | 1990-11-07 | $7700.00 | Window Closed / Lapsed |