US4789009A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Sixteen harness dual layer weave
Assignee: Huyck Corp
•
Filing: 1986-12-03
•
Granted: 1988-12-06
•
Expires: 2006-12-03
Abstract
Abstract An improved papermakers' fabric for use in papermaking, cellulose and similar machines, comprising a first layer of cross-machine direction yarns, which layer is intended in the position of use of the fabric to face the material to be formed, a second layer of cross-machine direction yarns stacked approximately under the first layer of cross machine direction yarns, which layer is intended in the position of use of the fabric to face the machine drive rollers, and machine direction yarns interweaving said two cross-machine direction layers. The paperside cross-machine direction yarns are woven for maximum cross-machine fiber support with alternate 6 float and 8 float sections. The machine side cross-machine direction yarns have a 14 float, ensuring high cross machine yarn volume available for wear before the load bearing machine direction yarns are subject to wear. The machine direction yarns are interwoven such that two adjacent machine direction yarns pass under the machine side cross-machine direction yarns directly under the paperside 6 float section, ensuring protection of the machine direction yarn and resulting in longer fabric life.
Inventors
- 👤 Brian H. P. Troughton
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 03:38
CPC Classifications
D; D21; D21F; D21F1/00; D21F1/0027; D21F1/0036; Y; Y10; Y10S; Y10S162/00; Y10S162/903
Claims Analysis
Total Claims: 16
Claim 1
Independent Claim
137 words
A dual-layer papermakers' fabric comprising an endless belt formed of machine direction and cross-machine direction yarn systems interwoven on sixteen harnesses, having a paper stock-contacting layer of cross-machine direction yarns; a machine-contacting layer of cross-machine direction yarns positioned with respect to the paper stock-contacting layer of cross-machine direction yarns so as to be on top of one another; machine direction yarns, said machine directions yarns being interwoven with the cross-machine direction yarns in such a way to interconnect the cross-machine direction yarns so that said machine-contacting layer of cross-machine direction yarns has a fourteen float, said paper stock-contacting layer of cross-machine direction yarn has alternate six float and eight float sections and two adjacent machine direction yarns pass over the machine-contacting cross-machine direction yarns directly over the six float section of the paper stock-contacting cross-machine direction yarns.
Claim 2
Dependent Claim
137 words
A dual-layer papermakers' fabric comprising an endless belt formed of machine direction and cross-machine direction yarn systems interwoven on sixteen harnesses, having a paper stock-contacting layer of cross-machine direction yarns; a machine-contacting layer of cross-machine direction yarns positioned with respect to the paper stock-contacting layer of cross-machine direction yarns so as to be on top of one another; machine direction yarns, said machine directions yarns being interwoven with the cross-machine direction yarns in such a way to interconnect the cross-machine direction yarns so that said machine-contacting layer of cross-machine direction yarns has a fourteen float, said paper stock-contacting layer of cross-machine direction yarn has alternate six float and eight float sections and two adjacent machine direction yarns pass over the machine-contacting cross-machine direction yarns directly over the six float section of the paper stock-contacting cross-machine direction yarns.
Claim 3
Dependent Claim
13 words
The papermakers' fabric of claim 1 wherein said fabric is a forming fabric.
Claim 4
Dependent Claim
20 words
The papermakers' fabric of claim 1 wherein said paper stock-contacting layer of cross-machine direction yarns are comprised of polyethylene terephthalate.
Claim 5
Dependent Claim
17 words
The papermakers' fabric of claim 3 wherein alternate cross-machine direction yarns of the machine-contacting layer comprise polyamide.
Claim 6
Dependent Claim
17 words
The papermaker' fabric of claim 1 wherein said yarns comprise polyethylene terephthalate, polyamides, polyesters, acrylics or copolymers.
Claim 7
Independent Claim
116 words
A method to manufacture papermakers' fabric comprising: providing a paper stock-contacting layer of cross-machine direction yarns; providing a machine-contacting layer of cross-machine direction yarns positioned with relation to the paper stock-contacting layer so as to form a pair of yarns essentially one on top of the other; interweaving the machine direction yarns with the cross-machine direction yarns to interconnect them providing a fourteen float on said machine-contacting layer of cross-machine direction yarns and six float and eight float sections on said paper stock-contacting layer of cross-machine direction yarns, with two adjacent machine direction yarns passing over said machine-contacting layer of cross-machine direction yarns directly over the six float section of said paper stock-contacting cross-machine direction yarns.
Claim 8
Independent Claim
116 words
A method to manufacture papermakers' fabric comprising: providing a paper stock-contacting layer of cross-machine direction yarns; providing a machine-contacting layer of cross-machine direction yarns positioned with relation to the paper stock-contacting layer so as to form a pair of yarns essentially one on top of the other; interweaving the machine direction yarns with the cross-machine direction yarns to interconnect them providing a fourteen float on said machine-contacting layer of cross-machine direction yarns and six float and eight float sections on said paper stock-contacting layer of cross-machine direction yarns, with two adjacent machine direction yarns passing over said machine-contacting layer of cross-machine direction yarns directly over the six float section of said paper stock-contacting cross-machine direction yarns.
Claim 9
Dependent Claim
33 words
The method of claim 6 wherein the paper stock-contacting layer of cross-machine direction yarns comprise polyethylene terephthalate, and the machine-contacting layer of cross-machine direction yarns comprise alternate yarns of polyethylene terephthalate and polyamide.
Claim 10
Dependent Claim
145 words
A dual-layer papermakers' fabric for use on a papermaking machine for the production of paper from paper stock, said dual-layer papermakers' fabric comprising an endless belt formed of machine direction and cross-machine direction yarn systems interwoven on sixteen harnesses, having a paper stock-contacting layer of cross-machine direction yarns; a machine-contacting layer of cross-machine direction yarns positioned with respect to the paper stock-contacting layer of cross-machine direction yarns so as to be directly on top of one another; and machine direction yarns interwoven with said cross-machine direction yarns in such a way to interconnect said cross-machine direction yarns so that the machine contacting-layer of cross-machine direction yarns has a fourteen float and the paper stock-contacting layer of cross-machine direction yarns contacts the paper stock at fourteen points in the sixteen harness weave, and two adjacent machine direction yarns pass over only one machine-contacting cross-machine direction yarn.
Claim 11
Dependent Claim
145 words
A dual-layer papermakers' fabric for use on a papermaking machine for the production of paper from paper stock, said dual-layer papermakers' fabric comprising an endless belt formed of machine direction and cross-machine direction yarn systems interwoven on sixteen harnesses, having a paper stock-contacting layer of cross-machine direction yarns; a machine-contacting layer of cross-machine direction yarns positioned with respect to the paper stock-contacting layer of cross-machine direction yarns so as to be directly on top of one another; and machine direction yarns interwoven with said cross-machine direction yarns in such a way to interconnect said cross-machine direction yarns so that the machine contacting-layer of cross-machine direction yarns has a fourteen float and the paper stock-contacting layer of cross-machine direction yarns contacts the paper stock at fourteen points in the sixteen harness weave, and two adjacent machine direction yarns pass over only one machine-contacting cross-machine direction yarn.
Claim 12
Dependent Claim
13 words
The papermakers' fabric of claim 8 wherein said fabric is a forming fabric.
Claim 13
Dependent Claim
20 words
The papermakers' fabric of claim 8 wherein said cross-machine direction of paper stock-contacting layer yarns are comprised of polyethylene terephthalate.
Claim 14
Dependent Claim
17 words
The papermakers' fabric of claim 10 wherein alternate cross-machine direction yarns of the machine-contacting layer comprise nylon.
Claim 15
Independent Claim
125 words
A method to manufacture papermakers' fabric for use on a papermaking machine for the production of paper from paper stock, said method comprising: providing a paper stock-contacting layer of cross-machine direction yarns; providing a machine-contacting layer of cross-machine direction yarns positioned with relation to the paper stock-contacting layer so as to form a pair of yarns, essentially one on top of the other; interweaving machine direction yarns with the cross-machine direction yarns to interconnect said cross-machine direction yarns so that two adjacent machine direction yarns pass over only one machine-contacting cross-machine direction yarn, the machine-contacting layer of cross-machine direction yarns has a fourteen float and the paper stock-contacting layer of cross-machine direction yarns contacts the paper stock at fourteen points in the sixteen harness weave.
Claim 16
Independent Claim
125 words
A method to manufacture papermakers' fabric for use on a papermaking machine for the production of paper from paper stock, said method comprising: providing a paper stock-contacting layer of cross-machine direction yarns; providing a machine-contacting layer of cross-machine direction yarns positioned with relation to the paper stock-contacting layer so as to form a pair of yarns, essentially one on top of the other; interweaving machine direction yarns with the cross-machine direction yarns to interconnect said cross-machine direction yarns so that two adjacent machine direction yarns pass over only one machine-contacting cross-machine direction yarn, the machine-contacting layer of cross-machine direction yarns has a fourteen float and the paper stock-contacting layer of cross-machine direction yarns contacts the paper stock at fourteen points in the sixteen harness weave.
References Cited (Backward Citations)
FR2342368A1
Cited
EP0048962A2
Cited
US4499927A
Cited
EP0080686A1
Cited
US4564052A
Cited
EP0085363A1
Cited
US4569375A
Cited
US4640741A
Cited
US4642261A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1991-12-06 | 1992-06-06 | 1992-12-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1995-12-06 | 1996-06-06 | 1996-12-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1999-12-06 | 2000-06-06 | 2000-12-06 | $7700.00 | Window Closed / Lapsed |