Patent US4139740A successfully refreshed from Google Patents.
Patent US3603354A successfully refreshed from Google Patents.
US3603354A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for use on papermaking machines
Assignee: Huyck Corp
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Filing: 1968-04-10
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Granted: 1971-09-07
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Expires: 1988-04-10
Abstract
Abstract This invention relates to an improved papermakers'' fabric for use in the press section of a papermaking machine and more specifically to a papermakers'' fabric having a plurality of spaced, parallel, substantially incompressible grooves in at least one surface thereof, which provide void volume for water expressed from a paper web as it passes through the pressure nip of the press rolls in the machine.
Inventors
- 👤 Charles Allen Lee
- 👤 Joseph Robert Wagner
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 10:55
CPC Classifications
D; D21; D21F; D21F1/00; D21F1/0027
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
91 words
A papermakers'' fabric for use in the press section of a papermaking machine comprising interwoven machine direction and cross-machine direction yarns, said machine direction yarns extending in the direction of travel of said fabric and said cross-machine direction yarns extending in the direction transverse to the direction of travel of said fabric, selected of said fabric yarns being substantially incompressible and larger in size than the remainder of the yarns which extend in the same direction to form an array of parallel substantially incompressible grooves between adjacent of said selected yarns.
Claim 2
Dependent Claim
91 words
A papermakers'' fabric for use in the press section of a papermaking machine comprising interwoven machine direction and cross-machine direction yarns, said machine direction yarns extending in the direction of travel of said fabric and said cross-machine direction yarns extending in the direction transverse to the direction of travel of said fabric, selected of said fabric yarns being substantially incompressible and larger in size than the remainder of the yarns which extend in the same direction to form an array of parallel substantially incompressible grooves between adjacent of said selected yarns.
Claim 3
Dependent Claim
20 words
A papermakers'' fabric as described in claim 1 wherein said selected yarns extend in the cross-machine direction of said fabric.
Claim 4
Dependent Claim
20 words
A papermakers'' fabric as described in claim 1 wherein said selected yarns extend in the machine direction of said fabric.
Claim 5
Dependent Claim
19 words
A papermakers'' fabric as described in claim 1 wherein said yarns are interwoven in a modified satin weave pattern.
Claim 6
Dependent Claim
17 words
A papermakers'' fabric as described in claim 1 wherein said yarns are interwoven in a reinforced weave.
Claim 7
Dependent Claim
17 words
A papermakers'' fabric as described in claim 1 wherein said selected yarns are made from synthetic materials.
Claim 8
Dependent Claim
104 words
A press felt for use in the press section of a papermaking machine comprising a woven fabric having machine direction yarns which extend in the direction of travel of said fabric and cross-machine direction yarns extending in a direction transverse to the direction of travel of said fabric, said yarns being interwoven in a modified satin weave pattern, selected of said cross-machine direction yarns being substantially incompressible and larger in size than the remainder of the yarns which extend in the cross-machine direction to form an array of substantially incompressible grooves adjacent of selected yarns, said selected yarns being made from a synthetic material.
Claim 9
Dependent Claim
104 words
A press felt for use in the press section of a papermaking machine comprising a woven fabric having machine direction yarns which extend in the direction of travel of said fabric and cross-machine direction yarns extending in a direction transverse to the direction of travel of said fabric, said yarns being interwoven in a modified satin weave pattern, selected of said cross-machine direction yarns being substantially incompressible and larger in size than the remainder of the yarns which extend in the cross-machine direction to form an array of substantially incompressible grooves adjacent of selected yarns, said selected yarns being made from a synthetic material.
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) | 1974-09-06 | 1975-03-08 | 1975-09-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-09-06 | 1979-03-08 | 1979-09-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-09-06 | 1983-03-08 | 1983-09-07 | $7700.00 | Window Closed / Lapsed |