Patent US4041577A successfully refreshed from Google Patents.
US4041577A
Expired / Lapsed
US
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Stringer for sliding clasp fastener
Assignee: YKK Corp
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Filing: 1976-02-24
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Granted: 1977-08-16
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Expires: 1996-02-24
Abstract
Abstract A fastener stringer comprises a warp-knit tape and a row of interlocking fastener elements secured thereto. The tape has a web portion formed by chain stitches defining longitudinally extending wales, tricot stitches extending diagonally across and between a plurality of adjacent wales, and laid-in weft threads extending over and connecting every four wales. The tape also has a longitudinal edge portion consisting solely of knit-loop forming threads. Both of the portions are interconnected transversely of the tape by threads constituting the web portion and edge portion, respectively. One of the wales adjacent the longitudinal edge portion is biased toward the web portion to widen an interwale valley between the above-mentioned one of wales and its neighboring wale.
Inventors
- 👤 Yoshio Matsuda
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 20:52
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: 4
Claim 1
Independent Claim
150 words
A fastener stringer which comprises a warp-knit tape and a row of interlocking fastener elements secured thereto, said tape having a web portion formed by chain stitches defining longitudinally extending wales, tricot stitches extending diagonally across and between a plurality of adjacent wales, and laid-in weft threads extending over and connecting every four wales and a longitudinal edge portion defined solely by knit-loop forming threads, including chain stitches defining plural longitudinal wales, and two groups of tricot stitches, the tricot stitches of each group thereof spanning a different number of wales of said chain stitches in the longitudinal edge portion, both of said portions being interconnected transversely of the tape by threads constituting said web portion and said edge portion, respectively, one of said wales adjacent said longitudinal edge portion being biased toward said web portion to widen an interwale valley between said one of wales and its neighboring wale.
Claim 2
Dependent Claim
150 words
A fastener stringer which comprises a warp-knit tape and a row of interlocking fastener elements secured thereto, said tape having a web portion formed by chain stitches defining longitudinally extending wales, tricot stitches extending diagonally across and between a plurality of adjacent wales, and laid-in weft threads extending over and connecting every four wales and a longitudinal edge portion defined solely by knit-loop forming threads, including chain stitches defining plural longitudinal wales, and two groups of tricot stitches, the tricot stitches of each group thereof spanning a different number of wales of said chain stitches in the longitudinal edge portion, both of said portions being interconnected transversely of the tape by threads constituting said web portion and said edge portion, respectively, one of said wales adjacent said longitudinal edge portion being biased toward said web portion to widen an interwale valley between said one of wales and its neighboring wale.
Claim 3
Dependent Claim
28 words
A fastener stringer as claimed in claim 1 wherein said interwale valley lies between the second and the third wale counting from an extreme edge of the tape.
Claim 4
Dependent Claim
32 words
A fastener stringer as claimed in claim 2 wherein said third wale is biased toward the center of the tape by the tension of laid-in weft threads lapping around said third wale.
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) | 1980-08-15 | 1981-02-14 | 1981-08-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-08-15 | 1985-02-14 | 1985-08-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-08-15 | 1989-02-14 | 1989-08-16 | $7700.00 | Window Closed / Lapsed |