US3757541A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Stringer foundation for slide fastener
Assignee: OPTIC HOLDING AG
•
Filing: 1970-10-20
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Granted: 1973-09-11
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Expires: 1990-10-20
Abstract
Abstract A stringer foundation for a slide fastener has a pair of parallel tapes which have been simultaneously formed on a warpknitting machine with a connecting filament joining their confronting edges. Each tape is formed by a plurality of warp chains laterally interconnected by laid-in weft filaments which span at least three of the wales formed by the chains. The connecting filament can be tensioned tighter than either the warp or weft filaments to form openings adjacent the edge wale. The connecting filament is adapted to be removed after mounting of the coupling elements.
Inventors
- 👤 A Frohlich
- 👤 M Cappel
- 👤 E Stubiger
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 14:15
CPC Classifications
D; D04; D04B; D04B21/00; D04B21/14; D04B21/16; A; A44; A44B; A44B19/00; A44B19/24; A44B19/34; A44B19/343; A44B19/42; D04B19/00; 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: 6
Claim 1
Independent Claim
128 words
A textile web comprising two unitarily and integrally knit longitudinally extending slide-fastener support tapes each consisting of a plurality of longitudinally extending wales formed by at least two warp threads, a laid-in weft thread, and at least one connecting filament extending back and forth between the proximal wales of said tapes and destructible to separate said tapes, at least one of said threads being of greater thickness than others of said threads and said filament for reinforcing the confronting edges of said tapes along said proximal wales, whereby said confronting edges are thicker than the remainder of said tapes, said connecting filament being tensioned tighter than said threads to produce a respective valley adjacent each proximal wale which is substantially broader than the valleys separating their remaining wales.
Claim 2
Dependent Claim
128 words
A textile web comprising two unitarily and integrally knit longitudinally extending slide-fastener support tapes each consisting of a plurality of longitudinally extending wales formed by at least two warp threads, a laid-in weft thread, and at least one connecting filament extending back and forth between the proximal wales of said tapes and destructible to separate said tapes, at least one of said threads being of greater thickness than others of said threads and said filament for reinforcing the confronting edges of said tapes along said proximal wales, whereby said confronting edges are thicker than the remainder of said tapes, said connecting filament being tensioned tighter than said threads to produce a respective valley adjacent each proximal wale which is substantially broader than the valleys separating their remaining wales.
Claim 3
Dependent Claim
16 words
The web defined in claim 1 wherein said laid-in thread extends across at least three wales.
Claim 4
Dependent Claim
16 words
The web defined in claim 2 wherein said warp threads are laid in a 1-0/0-1 pattern.
Claim 5
Dependent Claim
16 words
The web defined in claim 3 wherein said connecting filament is laid in a 4-4/0-0 pattern.
Claim 6
Dependent Claim
14 words
The web defined in claim 3 wherein said connecting filament follows a 2-0/0-2 pattern.
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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) | 1976-09-10 | 1977-03-12 | 1977-09-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-09-10 | 1981-03-12 | 1981-09-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-09-10 | 1985-03-12 | 1985-09-11 | $7700.00 | Window Closed / Lapsed |