Patent US3559810A successfully refreshed from Google Patents.
US3559810A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fabric including a filler of greater area than the fabric
Assignee: Appleton Wire Works Corp
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Filing: 1966-04-29
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Granted: 1971-02-02
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Expires: 1986-04-29
Abstract
Abstract A sewn fabric is formed by sewing nonwoven filler to a plurality of rack filament using cross filaments transversely of the rack filaments to sew the filler to the rack filaments. The filler is in the form of a stabilized sheet of filler filaments and in the finished fabric is undulated in at least one direction to give it a substantially greater surface area than the projected area of the fabric itself, thus making the fabric puckered.
Inventors
- 👤 Charles A Lee
- 👤 Warren E Furbeck
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 12:38
CPC Classifications
B; B01; B01D; B01D39/00; B01D39/08; B01D39/083; B01D39/14; B01D39/16; B01D39/1607; B01D39/1623; D; D04; D04H; D04H5/00; D04H5/02; B01D2239/00; B01D2239/04; B01D2239/06; B01D2239/0604; B01D2239/0627; Y; Y10; Y10T; Y10T428/00; Y10T428/24; Y10T428/24033; Y10T428/24041; Y10T428/2405; Y10T428/24355; Y10T428/24446
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
23 words
A puckered fabric according to claim 1 wherein the sHeet of filler is undulated in both the rack direction and the cross direction.
Claim 2
Dependent Claim
29 words
A puckered fabric according to claim 1 wherein the sheet of filler is undulated in the cross direction while running parallel to the rack filaments in the rack direction.
Claim 3
Dependent Claim
14 words
An endless puckered fabric according to claim 3 wherein said rack filaments extend endlessly.
Claim 4
Dependent Claim
24 words
A puckered fabric according to claim 1 wherein said rack filaments are substantially parallel and said cross filaments are stitched in substantially parallel rows.
Claim 5
Dependent Claim
17 words
A puckered fabric according to claim 5 wherein said cross filaments are stitched discretely between rack filaments.
Claim 6
Dependent Claim
19 words
A puckered fabric according to claim 1 including a bonding agent bonding said cross filaments to said rack filaments.
Claim 7
Dependent Claim
121 words
A filter medium formed by sewing comprising a plurality of substantially straight and parallel rack filaments disposed substantially in a sheet, nonwoven filler disposed on one side of said sheet of rack filaments, and a plurality of sewn filaments stitched in rows transversely of said rack filaments to sew said rack filaments to said filler, said rack filaments providing tensile strength for said filter medium, and said filler providing the filtering quality of said filter medium, said filler being formed as a stabilized sheet of filler filaments, being undulated to expose a surface for filtering that is substantially greater than the projected area of the mesh formed by said rack and sewn filaments, and providing predetermined permeability, porosity and void opening.
Claim 8
Dependent Claim
16 words
A filter medium according to claim 8 wherein said stabilized sheet of filler filaments is stiff.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-02-01 | 1974-08-03 | 1975-02-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-02-01 | 1978-08-03 | 1979-02-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-02-01 | 1982-08-03 | 1983-02-02 | $7700.00 | Window Closed / Lapsed |