US4047402A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Reinforcement for slide fasteners
Assignee: YKK Corp
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Filing: 1975-12-01
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Granted: 1977-09-13
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Expires: 1995-12-01
Abstract
Abstract Two or more warp-knitted members of a tubular or cylindrical shape are interconnected by a connecting thread to provide reinforcement to be inserted longitudinally in a row of helically coiled fastener elements. The tubular warp-knitted members may be wrapped around core members. A choice is available of diameters of the warp-knitted members so as to be compatible with the particular shapes and contours of given fastener elements. A plurality of warp-knitted members are interconnected in such a fashion that the resulting reinforcement can be adapted for securing a relatively large-size fastener element onto the tape.
Inventors
- 👤 Yoshio Matsuda
- 👤 Yoshinori Fujisaki
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 10:34
CPC Classifications
A; A44; A44B; A44B19/00; A44B19/10; A44B19/12; A44B19/24; A44B19/34
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
76 words
A reinforcement for a slide fastener comprising a plurality of cylindrical, warp-knitted members having needle loops and sinker loops interconnected therewith, said sinker loops extending in diagonally criss-crossed relation to each other and alternately over and under said needle loops to define a plurality of warp-knitted members each having a generally tubular knitted configuration, and a connecting thread laid in weftwise to interconnect said plurality of warp-knitted members transversely in parallel, spaced-apart relation to each other.
Claim 2
Dependent Claim
76 words
A reinforcement for a slide fastener comprising a plurality of cylindrical, warp-knitted members having needle loops and sinker loops interconnected therewith, said sinker loops extending in diagonally criss-crossed relation to each other and alternately over and under said needle loops to define a plurality of warp-knitted members each having a generally tubular knitted configuration, and a connecting thread laid in weftwise to interconnect said plurality of warp-knitted members transversely in parallel, spaced-apart relation to each other.
Claim 3
Dependent Claim
27 words
A reinforcement as defined in claim 1, including a core member disposed centrally in each of said warp-knitted members and secured in position by said sinker loops.
Claim 4
Dependent Claim
23 words
A reinforcement as defined in claim 1, wherein some of said plurality of cylindrical, warp-knitted members are smaller in diameter than the others.
References Cited (Backward Citations)
US1716843A
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US1734165A
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US1794159A
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FR718029A
Cited
US2338945A
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US2607715A
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US3068908A
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GB1199511A
Cited
US3926017A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1980-09-12 | 1981-03-14 | 1981-09-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-09-12 | 1985-03-14 | 1985-09-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-09-12 | 1989-03-14 | 1989-09-13 | $7700.00 | Window Closed / Lapsed |