US4357386A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Papermakers felt and method of manufacture
Assignee: Albany International Corp
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Filing: 1981-11-16
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Granted: 1982-11-02
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Expires: 2001-11-16
Abstract
Abstract The disclosure is of a composite papermakers felt made up of a textile base layer, an intermediate layer of polymeric resin foam particles and a covering layer of non-woven staple fibers. The felt is useful in the wet press section of a papermaking machine. The disclosure is also of a method of manufacturing the felt of the invention.
Inventors
- 👤 William A. Luciano
- 👤 Steven S. W. Yook
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 12:10
CPC Classifications
B; B32; B32B; B32B27/00; B32B27/12; B32B5/00; B32B5/02; B32B5/06; B32B27/32; B32B27/34; B32B27/36; B32B5/022; D; D21; D21F; D21F7/00; D21F7/08; D21F7/083; B32B2375/00; Y; Y10; Y10T; Y10T428/00; Y10T428/249921; Y10T428/249953; Y10T442/00; Y10T442/10; Y10T442/102; Y10T442/15; Y10T442/30; Y10T442/3325; Y10T442/3366; Y10T442/3374
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
54 words
A papermakers felt, which comprises; a textile base layer; an intermediate layer of granular particles of a synthetic, flexible polymeric resin foam; and an upper layer for receiving a wet paper sheet affixed to the base layer and the intermediate layer by needling, said upper layer comprising a plurality of non-woven textile staple fibers.
Claim 2
Dependent Claim
54 words
A papermakers felt, which comprises; a textile base layer; an intermediate layer of granular particles of a synthetic, flexible polymeric resin foam; and an upper layer for receiving a wet paper sheet affixed to the base layer and the intermediate layer by needling, said upper layer comprising a plurality of non-woven textile staple fibers.
Claim 3
Dependent Claim
22 words
The felt of claim 1 wherein said base layer also comprises a batt of staple fibers needled to the lower surface thereof.
Claim 4
Dependent Claim
14 words
The felt of claim 1 wherein said foam is an open cell polyurethane foam.
Claim 5
Dependent Claim
63 words
A papermakers felt, which comprises; a base layer of interwoven, machine direction (warp) and cross-machine direction (weft) textile yarns; an intermediate layer of granular particles of a synthetic, polymeric resin foam; and an upper layer for receiving a wet paper sheet affixed to the base layer and the intermediate layer by needling said upper layer comprising a plurality of non-woven textile staple fibers.
Claim 6
Dependent Claim
63 words
A papermakers felt, which comprises; a base layer of interwoven, machine direction (warp) and cross-machine direction (weft) textile yarns; an intermediate layer of granular particles of a synthetic, polymeric resin foam; and an upper layer for receiving a wet paper sheet affixed to the base layer and the intermediate layer by needling said upper layer comprising a plurality of non-woven textile staple fibers.
Claim 7
Independent Claim
59 words
A method of fabricating a papermakers felt, which comprises; providing an endless base layer of interwoven, machine direction and cross-machine direction textile yarns; providing a layer of granular particles, synthetic, flexible polymeric resin foam on one surface of the base layer; covering the layer of particles with a batt of non-woven, staple textile fibers; and needling the layers together.
Claim 8
Independent Claim
59 words
A method of fabricating a papermakers felt, which comprises; providing an endless base layer of interwoven, machine direction and cross-machine direction textile yarns; providing a layer of granular particles, synthetic, flexible polymeric resin foam on one surface of the base layer; covering the layer of particles with a batt of non-woven, staple textile fibers; and needling the layers together.
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) | 1985-11-01 | 1986-05-03 | 1986-11-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1989-11-01 | 1990-05-03 | 1990-11-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1993-11-01 | 1994-05-03 | 1994-11-02 | $7700.00 | Window Closed / Lapsed |