US4621663A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Cloth particularly for paper-manufacture machine
Assignee: Asten Inc
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Filing: 1985-02-26
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Granted: 1986-11-11
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Expires: 2005-02-26
Abstract
Abstract There is described a cloth for draining and drying paper webs, comprising a fabric formed by warp threads and weft threads. Said cloth further comprises a top layer of interlaced lengthwise strips and weft threads, at least one upper weft thread part passing underneath one or a plurality of lengthwise strips, being connected to the fabric by at least one warp thread thereof, which has been passed between said upper weft thread part and the lengthwise strip or strips.
Inventors
- 👤 Joseph Malmendier
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 05:14
CPC Classifications
D; D21; D21F; D21F1/00; D21F1/0027; D21F1/0036; B; B29; B29L; B29L2031/00; B29L2031/733
Claims Analysis
Total Claims: 15
Claim 1
Independent Claim
119 words
An improved papermakers fabric of the type having at least two adjacent plies, each ply comprised of respective systems of interwoven warp and weft yarns, said plies are united by interweaving selected yarns of the respective systems, the improvement comprising: said upper system having one set of yarns comprised of interwoven strips which substantially define the paper contact surface of the fabric, each of said interwoven strips having a width equal to at least the width occupied by two yarns of the adjacent ply directly beneath said strip and a thickness which is less than twenty percent of the width of said strip so as to define a width to thickness ratio for said strip of at least 5:1.
Claim 2
Dependent Claim
119 words
An improved papermakers fabric of the type having at least two adjacent plies, each ply comprised of respective systems of interwoven warp and weft yarns, said plies are united by interweaving selected yarns of the respective systems, the improvement comprising: said upper system having one set of yarns comprised of interwoven strips which substantially define the paper contact surface of the fabric, each of said interwoven strips having a width equal to at least the width occupied by two yarns of the adjacent ply directly beneath said strip and a thickness which is less than twenty percent of the width of said strip so as to define a width to thickness ratio for said strip of at least 5:1.
Claim 3
Dependent Claim
21 words
The fabric of claim 1 wherein the yarns interwoven with said strips in the same system have a non-circular cross section.
Claim 4
Dependent Claim
32 words
The fabric of claim 1 wherein said strips run in the lengthwise direction of the fabric and the yarns interwoven with said strips in the same system have a non-circular cross section.
Claim 5
Dependent Claim
31 words
The fabric of claim 3 wherein the yarns interwoven with said strips are less in number than the number of yarns in the adjacent ply which are parallel to said yarns.
Claim 6
Dependent Claim
38 words
The fabric of claim 1 wherein said strips run in the lengthwise direction of the fabric and the plies are united by interweaving lengthwise yarns of the adjacent ply system with the crosswise yarns of the upper system.
Claim 7
Dependent Claim
12 words
The fabric of claim 1 wherein said ratio is at least 10:1.
Claim 8
Dependent Claim
12 words
The fabric of claim 1 wherein said ratio is at least 15:1.
Claim 9
Dependent Claim
12 words
The fabric of claim 1 wherein said ration is at least 20:1.
Claim 10
Dependent Claim
12 words
The fabric of claim 1 wherein said ratio is at least 25:1.
Claim 11
Dependent Claim
16 words
The fabric of claim 1 wherein said strips run in the lengthwise direction of the fabric.
Claim 12
Dependent Claim
12 words
The fabric of claim 10 wherein said ratio is at least 10:1.
Claim 13
Dependent Claim
12 words
The fabric of claim 10 wherein said ratio is at least 15:1.
Claim 14
Dependent Claim
12 words
The fabric of claim 10 wherein said ration is at least 20:1.
Claim 15
Dependent Claim
12 words
The fabric of claim 10 wherein said ration is at least 25:1.
References Cited (Backward Citations)
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Cited
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Cited
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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) | 1989-11-10 | 1990-05-12 | 1990-11-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1993-11-10 | 1994-05-12 | 1994-11-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1997-11-10 | 1998-05-12 | 1998-11-11 | $7700.00 | Window Closed / Lapsed |