US4119753A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Papermaker's felt with grooved surface
Assignee: Huyck Licensco Inc
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Filing: 1977-09-12
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Granted: 1978-10-10
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Expires: 1997-09-12
Abstract
Abstract A papermaking felt having interwoven warp and filling yarns on its face side and bulky rib forming yarns on its machine side, the rib forming yarns lying in spaced apart relation to define water conveying channels therebetween, there being a batt surface on the face side of the fabric needled through the warp and filling yarns and into the rib forming yarns, the rib forming yarns being impregnated following needling with a resin which renders them essentially incompressible, the rib forming yarns being initially attached to the warp yarns by holding yarns which may be removed prior to the application of the resin or retained as a permanent part of the felt.
Inventors
- 👤 Frederick R. Smart
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 15:49
CPC Classifications
D; D21; D21F; D21F7/00; D21F7/08; D21F7/083; B; B32; B32B; B32B5/00; B32B5/22; B32B5/24; B32B5/26; B32B5/02; B32B5/06; B32B2260/00; B32B2260/02; B32B2260/021; B32B2260/04; B32B2260/046; Y; Y10; Y10T; Y10T442/00; Y10T442/30; Y10T442/3049; Y10T442/3179; Y10T442/3195; Y10T442/3203
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
132 words
A papermaking fabric having a face side and a machine side, said fabric comprising interwoven warp and filling yarns on the face side of the fabric, bulky rib forming yarns on the machine side of the fabric, said rib forming yarns comprising staple or multifilament yarns extending in parallel relation and lying in spaced apart relation relative to each other to define channels therebetween, a batt surface on the face side of said fabric needled through said warp and filling yarns and into said rib forming yarns, with the channels therebetween being essentially free of batt fibers, said rib forming yarns being impregnated with a resin capable of rendering said rib forming yarns essentially incompressible in use, the batt surface on the face side of the fabric being essentially free from resin.
Claim 2
Dependent Claim
132 words
A papermaking fabric having a face side and a machine side, said fabric comprising interwoven warp and filling yarns on the face side of the fabric, bulky rib forming yarns on the machine side of the fabric, said rib forming yarns comprising staple or multifilament yarns extending in parallel relation and lying in spaced apart relation relative to each other to define channels therebetween, a batt surface on the face side of said fabric needled through said warp and filling yarns and into said rib forming yarns, with the channels therebetween being essentially free of batt fibers, said rib forming yarns being impregnated with a resin capable of rendering said rib forming yarns essentially incompressible in use, the batt surface on the face side of the fabric being essentially free from resin.
Claim 3
Dependent Claim
22 words
The papermaking fabric claimed in claim 1 including holding yarns interconnecting said rib forming yarns with the face side of the fabric.
Claim 4
Dependent Claim
22 words
The papermaking fabric claimed in claim 2 wherein said holding yarns are compsoed of fibers capable of being dissolved by a solvent.
Claim 5
Dependent Claim
13 words
The papermaking fabric claimed in claim 3 wherein said fibers are water soluble.
Claim 6
Dependent Claim
57 words
The papermaking fabric claimed in claim 1 wherein said rib forming yarns lie between adjacent overlying filling yarns, and wherein the rib forming yarns defining the opposite sides of each channel are spaced apart by a distance such that two adjacent overlying filling yarns lie between the rib forming yarns defining the opposite sides of each channel.
Claim 7
Dependent Claim
44 words
The papermaking fabric claimed in claim 5 including holding yarns connecting said rib forming yarns to the face side of the fabric, said holding yarns passing beneath each rib forming yarn and over the filling yarns on opposite sides of each rib forming yarn.
Claim 8
Dependent Claim
31 words
The papermaking fabric claimed in claim 6 wherein the holding yarns pass over the two adjacent filling yarns lying between the rib forming yarns defining the opposite sides of each channel.
Claim 9
Dependent Claim
15 words
The papermaking fabric claimed in claim 5 wherein said rib forming yarns are in pairs.
Claim 10
Dependent Claim
24 words
The papermaking fabric claimed in claim 8 including holding yarns interconnecting said pairs of rib forming yarns with the face side of the fabric.
Claim 11
Dependent Claim
21 words
The papermaking fabric claimed in claim 9 wherein the rib forming yarns in each pair are anchored by separate holding yarns.
References Cited (Backward Citations)
US3613258A
Cited
US3948722A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1981-10-09 | 1982-04-10 | 1982-10-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-10-09 | 1986-04-10 | 1986-10-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-10-09 | 1990-04-10 | 1990-10-10 | $7700.00 | Window Closed / Lapsed |