US4427734A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Wet press felt for papermaking machines
Assignee: Albany International Corp
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Filing: 1982-04-19
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Granted: 1984-01-24
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Expires: 2002-04-19
Abstract
Abstract The disclosure is of a new wet press felt for use on papermaking machines. The wet press felt of the invention comprises a conventional felt fabric having needled thereto a plurality of non-woven layers of synthetic, textile fibers. Interposed between the layers of synthetic textile fibers are mesh fabrics (4 to 32 mesh) which support the individual non-woven layers and retard compaction of the overall construction.
Inventors
- 👤 Cary P. Johnson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 16:07
CPC Classifications
B; B32; B32B; B32B5/00; B32B5/02; B32B5/10; B32B5/022; D; D21; D21F; D21F7/00; D21F7/08; D21F7/083; B32B2262/00; B32B2262/02; B32B2262/0253; B32B2262/0261; B32B2262/0276; Y; Y10; Y10S; Y10S162/00; Y10S162/90; Y10T; Y10T442/00; Y10T442/50; Y10T442/56
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
91 words
A wet press felt for use on a papermaking machine, which comprises; a base fabric of interwoven textile yarns; a plurality of non-woven layers of synthetic, textile fibers each of which is attached to an adjacent layer and collectively to the base fabric by needling; and a layer of a monofilament mesh fabric (4 to 32 mesh) interposed between and attached by needling to the faces of adjacent layers of the non-woven textile opposed to those attached to the base fabric fibers, said mesh being made of a synthetic, polymeric resin.
Claim 2
Dependent Claim
91 words
A wet press felt for use on a papermaking machine, which comprises; a base fabric of interwoven textile yarns; a plurality of non-woven layers of synthetic, textile fibers each of which is attached to an adjacent layer and collectively to the base fabric by needling; and a layer of a monofilament mesh fabric (4 to 32 mesh) interposed between and attached by needling to the faces of adjacent layers of the non-woven textile opposed to those attached to the base fabric fibers, said mesh being made of a synthetic, polymeric resin.
Claim 3
Dependent Claim
7 words
The felt of claim 1 made endless.
References Cited (Backward Citations)
CA691463A
Cited
US3928699A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1987-01-23 | 1987-07-25 | 1988-01-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1991-01-23 | 1991-07-25 | 1992-01-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1995-01-23 | 1995-07-25 | 1996-01-24 | $7700.00 | Window Closed / Lapsed |