US4002045A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Warp-knit support tape for slide-fastener stringer
Assignee: Opti Holding AG
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Filing: 1975-05-23
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Granted: 1977-01-11
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Expires: 1995-05-23
Abstract
Abstract A slide-fastener stringer foundation is formed of support tapes which are warp-knit. Two different types of weft filaments are used, one being textured and of limited shrinkability and the other being highly shrinkable. The tape so knitted is heat-shrunk so as to cause the shrinkable yarn to form the textured yarn into a mass of bulges or loops on the surface of the tape, thereby imparting to this tape a very smooth texture.
Inventors
- 👤 Alfons Frohlich
- 👤 Marie-Luise Cappel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 16:29
CPC Classifications
A; A44; A44B; A44B19/00; A44B19/24; A44B19/34; A44B19/343; Y; Y10; Y10T; Y10T24/00; Y10T24/25; Y10T24/2518; Y10T24/2521; Y10T24/2527
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
72 words
A slide-fastener stringer support tape comprising a plurality of warp-knitted warp filaments and weft filaments, a portion of said weft filaments being textured synthetic yarns forming loose bulges on at least one face of said tape and another portion of said weft filaments being shrunk synthetic yarns, said yarns forming a series of loop-free spaces along an edge of said tape adapted to receive stitching securing a coupling element to said edge.
Claim 2
Dependent Claim
72 words
A slide-fastener stringer support tape comprising a plurality of warp-knitted warp filaments and weft filaments, a portion of said weft filaments being textured synthetic yarns forming loose bulges on at least one face of said tape and another portion of said weft filaments being shrunk synthetic yarns, said yarns forming a series of loop-free spaces along an edge of said tape adapted to receive stitching securing a coupling element to said edge.
References Cited (Backward Citations)
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US3714683A
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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) | 1980-01-11 | 1980-07-12 | 1981-01-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-01-11 | 1984-07-12 | 1985-01-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-01-11 | 1988-07-12 | 1989-01-11 | $7700.00 | Window Closed / Lapsed |