US4356225A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Papermarkers interwoven wet press felt
Assignee: Ascoe Felts Inc
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Filing: 1981-05-18
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Granted: 1982-10-26
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Expires: 2001-05-18
Abstract
Abstract A papermaker's wet felt having improved structural stability and void volume is disclosed. The fabric is at least three ply in construction and is constructed without binder yarns or adhesives.
Inventors
- 👤 Marcel Dufour
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 05:01
CPC Classifications
D; D21; D21F; D21F7/00; D21F7/08; D21F7/083; Y; Y10; Y10T; Y10T442/00; Y10T442/30; Y10T442/3179; Y10T442/3195; Y10T442/3203; Y10T442/3707; Y10T442/3724
Claims Analysis
Total Claims: 15
Claim 1
Independent Claim
91 words
A multi-layer papermaker's wet felt comprising: (a) at least three layers of machine direction yarns, said layers having their respective machine direction yarns aligned vertically; and (b) a plurality of cross machine direction yarns for interweaving said three machine direction layers, each of said cross machine direction yarns weaving in a repeat pattern having interlacings with machine direction yarns in at least two of said machine direction layers, said repeat pattern having floats which extend for at least two machine direction yarns thereby maintaining said machine direction layers in vertical alignment.
Claim 2
Dependent Claim
91 words
A multi-layer papermaker's wet felt comprising: (a) at least three layers of machine direction yarns, said layers having their respective machine direction yarns aligned vertically; and (b) a plurality of cross machine direction yarns for interweaving said three machine direction layers, each of said cross machine direction yarns weaving in a repeat pattern having interlacings with machine direction yarns in at least two of said machine direction layers, said repeat pattern having floats which extend for at least two machine direction yarns thereby maintaining said machine direction layers in vertical alignment.
Claim 3
Dependent Claim
15 words
The fabric of claim 1 wherein said wet felt further comprises: a batt needled thereto.
Claim 4
Dependent Claim
20 words
The fabric of claim 1 wherein: said repeat pattern has floats which extend for at least three machine direction yarns.
Claim 5
Dependent Claim
16 words
The fabric of claim 3 wherein: said repeat pattern repeats on eight cross machine direction yarns.
Claim 6
Dependent Claim
15 words
The fabric of claim 4 wherein said wet felt further comprises: a batt needled thereto.
Claim 7
Dependent Claim
16 words
The fabric of claim 1 wherein: said repeat pattern repeats on eight cross machine direction yarns.
Claim 8
Dependent Claim
113 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 cross machine system of yarns interwoven with selected floats with said machine direction yarns for maintaining said layers of machine direction yarns in vertical alignment, including a first cross machine sub-system interweaving with said top and middle layers in a repeat pattern having floats adjacent said middle layer extending at least two machine direction yarns; and a second cross machine sub-system interweaving with said bottom and middle layers in a repeat pattern having floats adjacent said middle layer extending at least two machine direction yarns.
Claim 9
Dependent Claim
113 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 cross machine system of yarns interwoven with selected floats with said machine direction yarns for maintaining said layers of machine direction yarns in vertical alignment, including a first cross machine sub-system interweaving with said top and middle layers in a repeat pattern having floats adjacent said middle layer extending at least two machine direction yarns; and a second cross machine sub-system interweaving with said bottom and middle layers in a repeat pattern having floats adjacent said middle layer extending at least two machine direction yarns.
Claim 10
Dependent Claim
38 words
A papermaker's felt according to claim 7 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 has a repeat of 4 yarns.
Claim 11
Dependent Claim
26 words
A papermaker's felt according to claim 8 wherein said floats of each said cross machine sub-system extend for two machine direction yarns of said middle layer.
Claim 12
Dependent Claim
26 words
A papermaker's felt according to claim 8 wherein said floats of each said cross machine sub-system extend for three machine direction yarns of said middle layer.
Claim 13
Dependent Claim
47 words
A papermaker's felt according to claim 7 wherein: the floats of said repeat pattern of said first cross machine sub-system run below said middle layer; and the floats of said repeat pattern of said second cross machine sub-system run above said middle layer of machine direction yarn.
Claim 14
Dependent Claim
30 words
A papermaker's felt according to claim 7 wherein the floats of said repeat patterns of said first and second cross machine sub-system are continuous within the repeat of the pattern.
Claim 15
Dependent Claim
21 words
A papermaker's felt according to claims 7, 8, 9, 10, 11 or 12 further comprising: a batt needled to said base.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1985-10-25 | 1986-04-26 | 1986-10-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1989-10-25 | 1990-04-26 | 1990-10-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1993-10-25 | 1994-04-26 | 1994-10-26 | $7700.00 | Window Closed / Lapsed |