Patent US4439481A successfully refreshed from Google Patents.
US4439481A
Expired / Lapsed
US
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Resole treated papermakers felt and method of fabrication
Assignee: Albany International Corp
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Filing: 1983-03-04
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Granted: 1984-03-27
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Expires: 2003-03-04
Abstract
Abstract The disclosure is of a papermakers wet-press felt fabric, felts made therefrom and their use, as wet press felts on papermaking machines.
Inventors
- 👤 Cary P. Johnson
- 👤 Jerry G. Sokaris
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 12:02
CPC Classifications
B; B32; B32B; B32B5/00; B32B5/02; B32B5/022; B32B5/06; B32B27/00; B32B27/12; D; D21; D21F; D21F7/00; D21F7/08; D21F7/083; Y; Y10; Y10S; Y10S162/00; Y10S162/90; Y10T; Y10T442/00; Y10T442/30; Y10T442/3707; Y10T442/3724; Y10T442/3732
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
44 words
An intermediate wet-press felt fabric, which comprises; a first layer of interwoven machine direction and cross-machine direction yarns; and a second layer of non-woven staple fibers, needled to the first layer; said yarns and fibers having a coating of a synthetic, cross-linkable, polymeric resin.
Claim 2
Dependent Claim
44 words
An intermediate wet-press felt fabric, which comprises; a first layer of interwoven machine direction and cross-machine direction yarns; and a second layer of non-woven staple fibers, needled to the first layer; said yarns and fibers having a coating of a synthetic, cross-linkable, polymeric resin.
Claim 3
Dependent Claim
7 words
The fabric of claim 1 made endless.
Claim 4
Dependent Claim
57 words
A papermakers wet-press felt fabric, which comprises; a first layer of interwoven machine direction and cross-machine direction yarns; a second layer of non-woven, staple fibers; and a third layer of non-woven, staple fibers; said first, second and third layers being joined together by needling; said yarns and fibers having a coating of a cross-linkable, synthetic polymeric resin.
Claim 5
Dependent Claim
57 words
A papermakers wet-press felt fabric, which comprises; a first layer of interwoven machine direction and cross-machine direction yarns; a second layer of non-woven, staple fibers; and a third layer of non-woven, staple fibers; said first, second and third layers being joined together by needling; said yarns and fibers having a coating of a cross-linkable, synthetic polymeric resin.
Claim 6
Dependent Claim
7 words
The fabric of claim 3 made endless.
Claim 7
Independent Claim
65 words
A method of manufacturing a wet-press papermakers felt which comprises; (1) providing an intermediate fabric which comprises; a first layer of interwoven machine direction and cross-machine direction yarns; and a second layer of non-woven staple fibers, needled to the first layer; (2) coating the fabric with a synthetic, cross-linkable, polymeric resin; (3) forming the coated fabric into an endless felt form; and cross-linking the resin.
Claim 8
Independent Claim
65 words
A method of manufacturing a wet-press papermakers felt which comprises; (1) providing an intermediate fabric which comprises; a first layer of interwoven machine direction and cross-machine direction yarns; and a second layer of non-woven staple fibers, needled to the first layer; (2) coating the fabric with a synthetic, cross-linkable, polymeric resin; (3) forming the coated fabric into an endless felt form; and cross-linking the resin.
Claim 9
Dependent Claim
17 words
The method of claim 5 wherein the resin is a B-stage resin and cross-linking is by heating.
References Cited (Backward Citations)
US4187618A
Cited
US4267227A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1987-03-27 | 1987-09-26 | 1988-03-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1991-03-27 | 1991-09-26 | 1992-03-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1995-03-27 | 1995-09-26 | 1996-03-27 | $7700.00 | Window Closed / Lapsed |