US4979543A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pin seamed planar press fabric
Assignee: Albany International Corp
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Filing: 1989-11-16
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Granted: 1990-12-25
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Expires: 2009-11-16
Abstract
Abstract A dress fabric comprising a plurality of layers of machine direction and cross-machine direction yarns, respectively, the yarns for each layer oriented in parallel with respect to each other and perpendicular with respect to the yarns of immediately adjacent layers, the yarns of one layer not binding the yarns of adjacent layers, and separate binder yarns for binding said layers. The fabric defines two machine direction oriented edges and two cross-machine direction oriented edges, whereby at each cross-machine direction oriented edge certain machine direction yarns extend from one layer a distance sufficient to form a loop and then return to the same cross-machine direction oriented edge into another layer of machine direction yarns.
Inventors
- 👤 Michael G. Moriarty
- 👤 Paul F. Hood
- 👤 Ricahard E. Humphreys
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 04:21
CPC Classifications
D; D21; D21F; D21F1/00; D21F1/0027; D21F1/0036; D21F1/0045; Y; Y10; Y10S; Y10S162/00; Y10S162/904; Y10T; Y10T428/00; Y10T428/24; Y10T428/24777; Y10T428/249921; Y10T428/249923
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
116 words
A press fabric for dewatering a moist paper web comprising first, second, and third layers, each layer comprising a plurality of unwoven, parallel, coplanar yarns, the yarns of said first and third layers extending in the machine direction and the yarns of the second layer extending in the cross-machine direction, the yarns of one layer being unbound by the yarns of any adjacent layer, and separate binder means for binding said layers, the fabric defining two machine direction oriented edges and two cross-machine direction oriented edges, whereby at each cross-machine direction oriented edge certain machine direction yarns from the first layer extend a distance sufficient to form a loop and then return into the third layer.
Claim 2
Dependent Claim
116 words
A press fabric for dewatering a moist paper web comprising first, second, and third layers, each layer comprising a plurality of unwoven, parallel, coplanar yarns, the yarns of said first and third layers extending in the machine direction and the yarns of the second layer extending in the cross-machine direction, the yarns of one layer being unbound by the yarns of any adjacent layer, and separate binder means for binding said layers, the fabric defining two machine direction oriented edges and two cross-machine direction oriented edges, whereby at each cross-machine direction oriented edge certain machine direction yarns from the first layer extend a distance sufficient to form a loop and then return into the third layer.
Claim 3
Dependent Claim
26 words
The press fabric of claim 1, wherein said binder means comprises threads which are passed through said layers between said first layer and said third layer.
Claim 4
Dependent Claim
22 words
The press fabric of claim 1, wherein the second layer is made of a resilient yarn to form a shock absorbing layer.
Claim 5
Dependent Claim
21 words
The press fabric of claim 1, wherein said binder means binds said first layer to other layers without any substantial knuckles.
Claim 6
Dependent Claim
21 words
The press fabric of claim 4, wherein said binder means comprises a thread thinner than the yarns of said first layer.
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) | 1993-12-24 | 1994-06-25 | 1994-12-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1997-12-24 | 1998-06-25 | 1998-12-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2001-12-24 | 2002-06-25 | 2002-12-25 | $7700.00 | Window Closed / Lapsed |