US4461803A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Papermaker's felt having multi-layered base fabric
Assignee: Ascoe Felts Inc
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Filing: 1983-06-17
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Granted: 1984-07-24
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Expires: 2003-06-17
Abstract
Abstract A papermaker's wet felt having a multi-layered base fabric. Multiple layers of machine direction yarns are interwoven with a system of cross machine direction yarns having selected floats such that the cross machine yarns predominate both the top and bottom surfaces of the base fabric. Each yarn of the cross machine direction yarn system interweaving with at least two layers of machine direction yarns.
Inventors
- 👤 Ian K. Booth
- 👤 Frank J. Cunnane, III
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 16:23
CPC Classifications
D; D21; D21F; D21F7/00; D21F7/08; D21F7/083; Y; Y10; Y10S; Y10S162/00; Y10S162/90; Y10T; Y10T442/00; Y10T442/30; Y10T442/3179; Y10T442/3195; Y10T442/3203; Y10T442/3707; Y10T442/3724
Claims Analysis
Total Claims: 29
Claim 1
Independent Claim
145 words
A multi-layer papermaker's wet felt comprising: a top layer of machine direction yarns; at least one intermediate layer of machine direction yarns; a bottom layer of machine direction yarns; a system of cross-machine direction yarns for interwoven with said top, middle and bottom machine direction layers, each said cross-machine direction yarns woven in a repeat pattern having interlacings with machine direction yarns in at least two of said machine direction layers; each said cross-machine direction yarns interwoven with said top layer with floats which extend over at least two top layer yarns so that said cross-machine direction yarns predominate the surface which they define with said top layer; each said cross-machine direction yarns interweaving with said bottom layer with floats which extend under at least two machine direction yarns so that said cross-machine direction yarns predominate the surface which they define with said bottom layer.
Claim 2
Dependent Claim
145 words
A multi-layer papermaker's wet felt comprising: a top layer of machine direction yarns; at least one intermediate layer of machine direction yarns; a bottom layer of machine direction yarns; a system of cross-machine direction yarns for interwoven with said top, middle and bottom machine direction layers, each said cross-machine direction yarns woven in a repeat pattern having interlacings with machine direction yarns in at least two of said machine direction layers; each said cross-machine direction yarns interwoven with said top layer with floats which extend over at least two top layer yarns so that said cross-machine direction yarns predominate the surface which they define with said top layer; each said cross-machine direction yarns interweaving with said bottom layer with floats which extend under at least two machine direction yarns so that said cross-machine direction yarns predominate the surface which they define with said bottom layer.
Claim 3
Dependent Claim
20 words
A papermaker's wet felt according to claim 1 wherein said wet felt further comprises: at least one batt needled thereto.
Claim 4
Dependent Claim
26 words
A papermaker's wet felt according to claim 1 wherein: said floats extend for at least three machine direction yarns of said top and bottom layers respectively.
Claim 5
Dependent Claim
18 words
A papermaker's wet felt according to claim 3 wherein: said repeat pattern repeats on eight cross-machine direction yarns.
Claim 6
Dependent Claim
20 words
A papermaker's wet felt according to claim 4 wherein said wet felt further comprises: at least one batt needled thereto.
Claim 7
Dependent Claim
18 words
A papermaker's wet felt according to claim 4 wherein: said layers of machine direction yarns are vertically aligned.
Claim 8
Dependent Claim
20 words
A papermaker's wet felt according to claim 6 wherein said wet felt further comprises: at least one batt needled thereto.
Claim 9
Dependent Claim
18 words
A papermaker's wet felt according to claim 1 wherein: said repeat pattern repeats on six cross-machine direction yarns.
Claim 10
Dependent Claim
18 words
A papermaker's wet felt according to claim 8 wherein: said layers of machine direction yarns are vertically aligned.
Claim 11
Dependent Claim
20 words
A papermaker's wet felt according to claim 9 wherein said wet felt further comprises: at least one batt needled thereto.
Claim 12
Dependent Claim
26 words
A papermaker's wet felt according to claim 1 wherein: said floats extend for at least four machine direction yarns of said top and bottom layers, respectively.
Claim 13
Dependent Claim
19 words
A papermaker's wet felt according to claim 11 wherein: said repeat pattern repeats on ten cross-machine direction direction yarns.
Claim 14
Dependent Claim
18 words
A papermaker's wet felt according to claim 12 wherein: said layers of machine direction yarns are vertically aligned.
Claim 15
Dependent Claim
20 words
A papermaker's wet felt according to claim 13 wherein said wet felt futher comprises: at least one batt needled thereto.
Claim 16
Dependent Claim
103 words
A papermaker's wet felt comprising: a top layer of machine direction yarns; a middle layer of machine direction yarns; a bottom layer of machine direction yarns; and a system of cross-machine direction yarns selectively interwoven with said machine direction yarns for providing smooth surfaces above said top layer and below said bottom layer, including: a first sub-system interwoven with said top and middle layers in a repeat pattern having floats extending over at least two top layer yarns; and a second sub-system interweaving with said bottom and middle layers in a repeat pattern having floats extending under at least two bottom layer yarns.
Claim 17
Dependent Claim
103 words
A papermaker's wet felt comprising: a top layer of machine direction yarns; a middle layer of machine direction yarns; a bottom layer of machine direction yarns; and a system of cross-machine direction yarns selectively interwoven with said machine direction yarns for providing smooth surfaces above said top layer and below said bottom layer, including: a first sub-system interwoven with said top and middle layers in a repeat pattern having floats extending over at least two top layer yarns; and a second sub-system interweaving with said bottom and middle layers in a repeat pattern having floats extending under at least two bottom layer yarns.
Claim 18
Dependent Claim
20 words
A papermaker's wet felt according to claim 15 further comprising: a batt needled to at least one of said surfaces.
Claim 19
Dependent Claim
38 words
A papermaker's wet felt according to claim 15 wherein said cross-machine yarn system is interwoven with said machine direction yarn in a repeat of 8 yarns such that each of said sub-systems have a repeat of 4 yarns.
Claim 20
Dependent Claim
24 words
A papermaker's wet felt according to claim 17 wherein said floats of each said cross-machine sub-system extend for at least three machine direction yarns.
Claim 21
Dependent Claim
18 words
A papermaker's wet felt according to claim 18 wherein: said layers of machine direction yarns are vertically aligned.
Claim 22
Dependent Claim
20 words
A papermaker's wet felt according to claim 19 further comprising: a batt needled to at least one of said surfaces.
Claim 23
Dependent Claim
38 words
A papermaker's wet felt according to claim 15 wherein said cross-machine yarn system is interwoven with said machine direction yarn in a repeat of 6 yarns such that each of said sub-systems have a repeat of 3 yarns.
Claim 24
Dependent Claim
18 words
A papermaker's wet felt according to claim 21 wherein: said layers of machine direction yarns are vertically aligned.
Claim 25
Dependent Claim
20 words
A papermaker's wet felt according to claim 22 further comprising: a batt needled to at least one of said surfaces.
Claim 26
Dependent Claim
38 words
A papermaker's wet felt according to claim 15 wherein: said cross-machine yarn system is interwoven with said machine direction yarn in a repeat of 10 yarns such that each of said sub-systems have a repeat of 5 yarns.
Claim 27
Dependent Claim
24 words
A papermaker's wet felt according to claim 24 wherein: said floats of each said cross-machine sub-system extend for at least four machine direction yarns.
Claim 28
Dependent Claim
18 words
A papermaker's wet felt according to claim 25 wherein: said layers of machine direction yarns are vertically aligned.
Claim 29
Dependent Claim
19 words
A papermaker's felt according to claim 26 further comprising: a batt needled to at least one of said surfaces.
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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) | 1987-07-24 | 1988-01-23 | 1988-07-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1991-07-24 | 1992-01-23 | 1992-07-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1995-07-24 | 1996-01-23 | 1996-07-24 | $7700.00 | Window Closed / Lapsed |