US4107367A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Papermakers felts
Assignee: Huyck Licensco Inc
•
Filing: 1977-06-16
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Granted: 1978-08-15
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Expires: 1997-06-16
Abstract
Abstract The present invention relates to a novel felt construction for use in the press section of the papermaking machine. More particularly, this invention has to do with a papermakers' felt having a paper-sheet-contacting layer comprised of substantially flat fibers joined by any suitable means to either a woven or nonwoven intermediate batt layer and/or base layer.
Inventors
- 👤 Eugene Zoltan Fekete
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 01:42
CPC Classifications
D; D21; D21F; D21F7/00; D21F7/08; D21F7/083; Y; Y10; Y10S; Y10S162/00; Y10S162/90; Y10T; Y10T428/00; Y10T428/29; Y10T428/2913; Y10T428/2973; Y10T442/00; Y10T442/30; Y10T442/3707; Y10T442/60; Y10T442/608; Y10T442/609; Y10T442/611
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
73 words
In a felt for use in a papermaking machine, the improvement which comprises a nonwoven sheet-contacting layer for said felt, said sheet-contacting layer as initially formed being composed of at least a minor proportion of flat fibers having cross-sectional dimensions which are longer than they are wide, the remainder of the fibers in said sheet-contacting layer being of other than flat fibers, said sheet-contacting layer being joined to one surface of said felt.
Claim 2
Dependent Claim
73 words
In a felt for use in a papermaking machine, the improvement which comprises a nonwoven sheet-contacting layer for said felt, said sheet-contacting layer as initially formed being composed of at least a minor proportion of flat fibers having cross-sectional dimensions which are longer than they are wide, the remainder of the fibers in said sheet-contacting layer being of other than flat fibers, said sheet-contacting layer being joined to one surface of said felt.
Claim 3
Dependent Claim
17 words
The felt structure claimed in claim 1 wherein said sheet-contacting layer contains at least 10% flat fibers.
Claim 4
Dependent Claim
17 words
The felt structure claimed in claim 1 wherein said sheet-contacting layer contains more than 50% flat fibers.
Claim 5
Dependent Claim
16 words
The felt structure claimed in claim 1 wherein said sheet-contacting layer is needled to said felt.
Claim 6
Dependent Claim
26 words
The felt structure claimed in claim 1 wherein said felt has a base layer, and wherein said sheet-contacting layer is joined directly to said base layer.
Claim 7
Dependent Claim
15 words
The felt structure claimed in claim 5 wherein said base layer comprises a woven fabric.
Claim 8
Dependent Claim
39 words
The felt structure claimed in claim 1 wherein said felt has a base layer and a batt layer joined to one surface of said base layer, with said sheet-contacting layer joined to the opposite surface of said batt layer.
Claim 9
Dependent Claim
26 words
The felt structure claimed in claim 7 wherein both said sheet-contacting layer and said batt layer are needled to each other and to said base layer.
Claim 10
Dependent Claim
15 words
The felt structure claimed in claim 8 wherein said base layer comprises a woven fabric.
Claim 11
Dependent Claim
22 words
The felt structure claimed in claim 1 wherein said flat fibers have a cross-sectional length to width ratio of at least 3:1.
References Cited (Backward Citations)
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US2908064A
Cited
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Cited
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Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1981-08-14 | 1982-02-13 | 1982-08-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-08-14 | 1986-02-13 | 1986-08-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-08-14 | 1990-02-13 | 1990-08-15 | $7700.00 | Window Closed / Lapsed |