Patent US3885602A successfully refreshed from Google Patents.
US3885602A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Woven fourdrinier fabric
Assignee: Individual
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Filing: 1973-11-21
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Granted: 1975-05-27
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Expires: 1993-11-21
Abstract
Abstract A woven Fourdrinier fabric so constructed that it has a relatively long useful life. The fabric is characterized by having at least two interconnected plies with each ply being of a mesh weave and wherein the size and number of yarns per square inch thereof are such that each ply has at least about 9% open area for permitting drainage therethrough of liquid from a slurry used in the manufacture of paper and the like.
Inventors
- 👤 Philip H Slaughter
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 09:23
CPC Classifications
D; D21; D21F; D21F1/00; D21F1/0027; D21F1/0036; D21F1/0045; Y; Y10; Y10S; Y10S162/00; Y10S162/903
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
54 words
A Fourdrinier fabric comprising at least two woven plies of respective sets of weft yarns and warp yarns, binder warp yarns interwoven with and interconnecting said two plies, and each of said plies being in the form of a mesh weave having an open area of at least about 9% per square inch thereof.
Claim 2
Dependent Claim
54 words
A Fourdrinier fabric comprising at least two woven plies of respective sets of weft yarns and warp yarns, binder warp yarns interwoven with and interconnecting said two plies, and each of said plies being in the form of a mesh weave having an open area of at least about 9% per square inch thereof.
Claim 3
Dependent Claim
21 words
A Fourdrinier fabric according to claim 1, wherein both of said plies are endless with one ply surrounding the other ply.
Claim 4
Dependent Claim
74 words
A Fourdrinier fabric according to claim 1, wherein one of said plies is an outer ply and the other of said plies is an inner ply, the warp yarns of each ply extending transversely across the width of the fabric, and the weft yarns in each ply extending lengthwise and around the fabric so that each ply is of substantially endless form with the weft yarns in said outer ply encircling said inner ply.
Claim 5
Dependent Claim
20 words
A Fourdrinier fabric according to claim 1, wherein the warp yarns in the two plies are approximately the same size.
Claim 6
Dependent Claim
22 words
A Fourdrinier fabric according to claim 1, wherein said weft yarns and said warp yarns in the two plies are synthetic yarns.
Claim 7
Dependent Claim
23 words
A Fourdrinier fabric according to claim 1, wherein said binder warp yarns are substantially smaller than said warp yarns in the two plies.
Claim 8
Dependent Claim
130 words
A Fourdrinier endless belt fabric comprising a pair of superposed outer and inner endless woven plies of respective sets of weft yarns and main warp yarns, binder warp yarns interwoven with an interconnecting said outer and inner endless woven plies, the warp yarns of each ply extending transversely across the endless belt fabric, the weft yarns in each ply extending lengthwise thereof and around the belt fabric in substantially endless form, all of the yarns being multifilament synthetic yarns, and each of the plies being a mesh weave having interstices therethrough forming an open area of at least about 9% per square inch of each ply with the interstices of each ply being substantially uniformly distributed throughout the respective ply for permitting liquid to drain through the Fourdrinier belt fabric.
Claim 9
Dependent Claim
130 words
A Fourdrinier endless belt fabric comprising a pair of superposed outer and inner endless woven plies of respective sets of weft yarns and main warp yarns, binder warp yarns interwoven with an interconnecting said outer and inner endless woven plies, the warp yarns of each ply extending transversely across the endless belt fabric, the weft yarns in each ply extending lengthwise thereof and around the belt fabric in substantially endless form, all of the yarns being multifilament synthetic yarns, and each of the plies being a mesh weave having interstices therethrough forming an open area of at least about 9% per square inch of each ply with the interstices of each ply being substantially uniformly distributed throughout the respective ply for permitting liquid to drain through the Fourdrinier belt fabric.
Claim 10
Dependent Claim
53 words
A Fourdrinier fabric comprising at least two woven plies of respective sets of weft yarns and warp yarns, binder yarns interwoven with an interconnecting said two plies, and each of said plies being in the form of a mesh weave having an open area of at least about 9% per square inch thereof.
Claim 11
Dependent Claim
53 words
A Fourdrinier fabric comprising at least two woven plies of respective sets of weft yarns and warp yarns, binder yarns interwoven with an interconnecting said two plies, and each of said plies being in the form of a mesh weave having an open area of at least about 9% per square inch 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) | 1978-05-26 | 1978-11-25 | 1979-05-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-05-26 | 1982-11-25 | 1983-05-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-05-26 | 1986-11-25 | 1987-05-27 | $7700.00 | Window Closed / Lapsed |