US4463486A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of manufacturing a velvet-type fastener web
Assignee: YKK Corp
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Filing: 1981-08-12
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Granted: 1984-08-07
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Expires: 2001-08-12
Abstract
Abstract A velvet-type or snap-together fastener web comprises a warp-knitted ground structure and series of interlooped loops disposed in at least every other wale, each loop including a pair of mushroomed stems projecting from the wale at each course. To produce such a fastener web, a double-faced fabric is knitted on a Raschel warp knitting machine, and is separated into a plurality of strips by dissolving transversely spaced water-soluble threads in the fabric. Each strip is divided into front and back fabric webs by severing thermoplastic thread portions therebetween, leaving a multiplicity of raised stems on each fabric web. The raised fabrc stems are then heated to mushroom their ends.
Inventors
- 👤 Yoshio Matsuda
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 22:36
CPC Classifications
A; A44; A44B; A44B18/00; A44B18/0023; A44B18/0038; A44B18/0042; D; D04; D04B; D04B21/00; D04B21/20; D04B35/00; D04B35/34; D10; D10B; D10B2403/00; D10B2403/03; D10B2403/031; D10B2403/0311; D10B2501/00; D10B2501/06; D10B2501/063; D10B2501/0632
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
124 words
A method of manufacturing a pair of velvet-type fastener webs, comprising the steps of: (a) knitting a double-faced fabric including a pair of front and back ground structures and a plurality of thermoplastic monofilaments knitted with and having portions extending between said front and back ground structures, said thermoplastic monofilaments being knitted as chain stitches in both said front and said back ground structures, each monofilament having a series of loops knitted in each one of at least selected wales of the respective ground structure; (b) severing said portion of the monofilaments to separate said double-faced fabric structure into the front and back ground structures each having a plurality of raised thermoplastic stems; and (c) heating said raised stems to form locking ends thereon.
Claim 2
Independent Claim
124 words
A method of manufacturing a pair of velvet-type fastener webs, comprising the steps of: (a) knitting a double-faced fabric including a pair of front and back ground structures and a plurality of thermoplastic monofilaments knitted with and having portions extending between said front and back ground structures, said thermoplastic monofilaments being knitted as chain stitches in both said front and said back ground structures, each monofilament having a series of loops knitted in each one of at least selected wales of the respective ground structure; (b) severing said portion of the monofilaments to separate said double-faced fabric structure into the front and back ground structures each having a plurality of raised thermoplastic stems; and (c) heating said raised stems to form locking ends thereon.
Claim 3
Dependent Claim
14 words
A method according to claim 1, said chain stitches having the pattern of 0-2/0-2/0-2/0-2.
Claim 4
Dependent Claim
14 words
A method according to claim 1, said chain stitches having the pattern of 2-4/2-4/2-0/2-0.
Claim 5
Dependent Claim
22 words
A method according to claim 1, said thermoplastic monofilaments being knitted with said front and back ground structures along alternate wales thereof.
Claim 6
Dependent Claim
23 words
A method according to claim 1, said thermoplastic monofilaments being knitted with said front and back ground structures along every third wale thereof.
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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) | 1987-08-07 | 1988-02-06 | 1988-08-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1991-08-07 | 1992-02-06 | 1992-08-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1995-08-07 | 1996-02-06 | 1996-08-07 | $7700.00 | Window Closed / Lapsed |