Patent US4795480A successfully refreshed from Google Patents.
US4795480A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Papermakers felt with a resin matrix surface
Assignee: Albany International Corp
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Filing: 1986-12-10
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Granted: 1989-01-03
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Expires: 2006-12-10
Abstract
Abstract A press felt base (single or multiple layer) having a plastic, fiber reinforced resinous matrix surface, wherein the surface is composed of a resin. The press felt base also having textile fibers distributed throughout the resin and having open air channels and voids throughout the resin once it is hardened.
Inventors
- 👤 Donald R. Boyer
- 👤 Robert L. Crook
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 16:03
CPC Classifications
D; D21; D21F; D21F7/00; D21F7/02; D21F7/08; D21F7/083; D21F1/00; D21F1/0027; D21F1/0063
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
68 words
A method of manufacturing a woven press felt base having at least one woven layer which comprises: providing a woven base; coating said woven base with fluid resin containing a network of textile fibers; curing said resin on said woven felt base; and grinding said resin coated woven felt base to open sealed voids said channels and to impact a smooth, highly uniform finished surface to said felt.
Claim 2
Independent Claim
68 words
A method of manufacturing a woven press felt base having at least one woven layer which comprises: providing a woven base; coating said woven base with fluid resin containing a network of textile fibers; curing said resin on said woven felt base; and grinding said resin coated woven felt base to open sealed voids said channels and to impact a smooth, highly uniform finished surface to said felt.
Claim 3
Independent Claim
70 words
A method of manufacturing a woven press felt base having at least one woven layer which comprises: providing a woven base with a network of textile fibers; coating said woven base with a fluid resin; curing said resin on said woven felt base; and grinding said resin coated woven felt base to open sealed void channels and to impart a smooth, highly uniform finished surface to said woven felt base.
Claim 4
Independent Claim
70 words
A method of manufacturing a woven press felt base having at least one woven layer which comprises: providing a woven base with a network of textile fibers; coating said woven base with a fluid resin; curing said resin on said woven felt base; and grinding said resin coated woven felt base to open sealed void channels and to impart a smooth, highly uniform finished surface to said woven felt 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) | 1992-01-03 | 1992-07-04 | 1993-01-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1996-01-03 | 1996-07-04 | 1997-01-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2000-01-03 | 2000-07-04 | 2001-01-03 | $7700.00 | Window Closed / Lapsed |