US3926017A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Warp knitted tape for slide fasteners
Assignee: YKK Corp
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Filing: 1974-10-04
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Granted: 1975-12-16
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Expires: 1994-10-04
Abstract
Abstract A warp-knitted tape for slide fasteners is provided with a web portion having wales projecting symmetrically from both surfaces and a marginal edge portion adapted for mounting thereon slide fastener elements. The marginal edge portion of the tape is thickened sufficiently to permit the legs of the fastener elements to be clamped fast on the tape astride of the marginal edge portion.
Inventors
- 👤 Yoshio Matsuda
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 12:54
CPC Classifications
D; D04; D04B; D04B21/00; D04B21/14; D04B21/16; A; A44; A44B; A44B19/00; A44B19/24; A44B19/34; A44B19/343
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
154 words
A warp-knitted tape for a slide fastener, which comprises a web portion and a marginal edge portion extending longitudinally of the web portion and adapted to carry a row of coupling elements each having a pair of spaced-apart legs extending in a transverse direction to said row of coupling elements, said web portion comprising chain stitches forming a plurality of longitudinally extending wales and at least two different groups of transversely extending lapping threads laid in to connect said wales coursewise, and said marginal edge portion comprising chain stitches forming a plurality of longitudinally extending wales and two different groups of tricot stitches extending across and interknitted with said wales whereby said marginal edge portion is thickened and projects symmetrically with respect to the plane of the tape to accommodate securing said row of coupling elements to the marginal edge portion with the legs of the elements mounted astride of said marginal edge portion.
Claim 2
Dependent Claim
154 words
A warp-knitted tape for a slide fastener, which comprises a web portion and a marginal edge portion extending longitudinally of the web portion and adapted to carry a row of coupling elements each having a pair of spaced-apart legs extending in a transverse direction to said row of coupling elements, said web portion comprising chain stitches forming a plurality of longitudinally extending wales and at least two different groups of transversely extending lapping threads laid in to connect said wales coursewise, and said marginal edge portion comprising chain stitches forming a plurality of longitudinally extending wales and two different groups of tricot stitches extending across and interknitted with said wales whereby said marginal edge portion is thickened and projects symmetrically with respect to the plane of the tape to accommodate securing said row of coupling elements to the marginal edge portion with the legs of the elements mounted astride of said marginal edge portion.
Claim 3
Dependent Claim
23 words
A warp-knitted tape as defined in claim 1 in which a reinforcing core member 1 is inserted centrally into said marginal edge protion.
Claim 4
Dependent Claim
38 words
A warp-knitted tape as defined in claim 1 in which said web portion and said marginal edge portion are connected together by lapping threads which are thicker and stronger than the remaining lapping treads in said web portion.
Claim 5
Dependent Claim
31 words
A warp-knitted tape as defined in claim 1 wherein said web portion is provided over its entire region with a plurality of wales projecting symmetrically from opposite surfaces of the tape.
Claim 6
Dependent Claim
38 words
A warp-knitted tape as defined in claim 1 wherein said web portion is provided solely at a limited width region adjacent said marginal edge portion with a plurality of wales projecting symmetrically from opposite surfaces of the tape.
Claim 7
Dependent Claim
40 words
A warp-knitted tape as defined in claim 1 wherein one group of said two different groups of tricot stitches forming said marginal edge portion are laid in the lay of 2-0/4-6 and the other group in the lay of 4-6/2-0.
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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) | 1978-12-15 | 1979-06-16 | 1979-12-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-12-15 | 1983-06-16 | 1983-12-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-12-15 | 1987-06-16 | 1987-12-16 | $7700.00 | Window Closed / Lapsed |