Patent US4921750A successfully refreshed from Google Patents.
US4921750A
Expired / Lapsed
US
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Papermaker's thru-dryer embossing fabric
Assignee: Asten Inc
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Filing: 1988-05-25
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Granted: 1990-05-01
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Expires: 2008-05-25
Abstract
Abstract A papermaker's fabric is disclosed. The fabric is comprised of at least top and bottom machine direction yarn systems, each machine direction yarn system being formed of a plurality of yarns which defines a respective top or bottom plane of machine direction yarns. The yarns of the systems are vertically aligned and the top and bottom planes are parallel. A cross machine direction yarn system is interwoven with the machine direction yarn systems in a repeated pattern encompassing at least four adjacent top plane machine direction yarns, with the fabric top plane having an open area of at least 40% and the fabric having an air permeability of at least 900 CFM. The fabric as a substrate has special utility for an embossing fabric.
Inventors
- 👤 Jeffrey L. Todd
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 23:42
CPC Classifications
D; D21; D21F; D21F1/00; D21F1/0027; D21F1/0036; Y; Y10; Y10S; Y10S162/00; Y10S162/902; Y10T; Y10T442/00; Y10T442/30; Y10T442/3179; Y10T442/3195; Y10T442/3203
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
120 words
A papermaker's substrate for combination with a resinous, patterned paper contacting surface to produce an embossing fabric, said substrate comprised of at least top and bottom machine direction yarn systems, each machine direction yarn system being formed of a plurality of yarns which defines a respective horizontal plane of machine direction yarns, said systems being vertically aligned with each other and said respective horizontal planes being parallel; a cross machine direction yarn system which is interwoven with said machine direction yarn systems, and maintains the respective machine direction yarns substantially within their respective planes and in vertical alignment; and an open area of at least 40% in the top plane with a substrate air permeability of at least 900 CFM.
Claim 2
Dependent Claim
120 words
A papermaker's substrate for combination with a resinous, patterned paper contacting surface to produce an embossing fabric, said substrate comprised of at least top and bottom machine direction yarn systems, each machine direction yarn system being formed of a plurality of yarns which defines a respective horizontal plane of machine direction yarns, said systems being vertically aligned with each other and said respective horizontal planes being parallel; a cross machine direction yarn system which is interwoven with said machine direction yarn systems, and maintains the respective machine direction yarns substantially within their respective planes and in vertical alignment; and an open area of at least 40% in the top plane with a substrate air permeability of at least 900 CFM.
Claim 3
Dependent Claim
123 words
An embossing fabric comprised of a substrate fabric and a resinous material defining a patterned paper contacting surface, said substrate fabric further comprised of at least top and bottom machine direction yarn systems, each machine direction yarn system being formed of a plurality of yarns which define a respective plane of machine direction yarns, said respective planes being parallel and said yarn systems being vertically aligned with each other; and a cross machine direction yarn system interwoven with said machine direction yarn systems in a repeated pattern with the respective machine direction yarns substantially within their respective planes and in vertical alignment, said substrate fabric having a top plane open area of at least 40% and air permeability of at least 900 CFM.
Claim 4
Dependent Claim
123 words
An embossing fabric comprised of a substrate fabric and a resinous material defining a patterned paper contacting surface, said substrate fabric further comprised of at least top and bottom machine direction yarn systems, each machine direction yarn system being formed of a plurality of yarns which define a respective plane of machine direction yarns, said respective planes being parallel and said yarn systems being vertically aligned with each other; and a cross machine direction yarn system interwoven with said machine direction yarn systems in a repeated pattern with the respective machine direction yarns substantially within their respective planes and in vertical alignment, said substrate fabric having a top plane open area of at least 40% and air permeability of at least 900 CFM.
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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) | 1993-04-30 | 1993-10-30 | 1994-05-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1997-04-30 | 1997-10-30 | 1998-05-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2001-04-30 | 2001-10-30 | 2002-05-01 | $7700.00 | Window Closed / Lapsed |