US3976525A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of making a needled scouring pad
Assignee: Fiber Bond Corp
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Filing: 1974-10-24
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Granted: 1976-08-24
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Expires: 1994-10-24
Abstract
Abstract A composite scouring pad is prepared comprising a non-woven layer and a flexible foam layer in juxtaposition to each other, the flexible foam being needled to the nonwoven layer by fibers from the non-woven layer which pass through the foam layer and emerge from its opposite side. The opposite side of the foam layer is coated with a resinous layer which anchors the emergent fibers thereon, the fibers providing a desired roughness to said side, making said side suitable as a scouring surface. The non-woven layer is impregnated with a resin and, in the preferred embodiment, with abrasive particles to provide a second scouring surface.
Inventors
- 👤 Edward Mednick
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 12:14
CPC Classifications
B; B24; B24D; B24D11/00; B24D11/06; A; A47; A47L; A47L17/00; A47L17/04; A47L17/08; B24D11/001; B24D11/005; B24D11/006; B32; B32B; B32B5/00; B32B5/02; B32B5/022; B32B5/024; B32B5/028; B32B5/18; B32B5/22; B32B5/24; B32B5/26; B32B2255/00; B32B2255/10; B32B2255/102; B32B2255/26; B32B2260/00; B32B2260/02; B32B2260/021; B32B2260/04; B32B2260/046; B32B2262/00; B32B2262/02; B32B2262/0246; B32B2262/0253; B32B2262/0261; B32B2262/0276; B32B2264/00; B32B2264/10; B32B2264/102; B32B2266/00; B32B2266/02; B32B2266/0214; B32B2266/0278; B32B2307/00; B32B2307/50; B32B2307/538; B32B2307/546; B32B2307/554; B32B2307/558; B32B2307/70; B32B2307/726; B32B2432/00; B32B5/06; B32B5/245
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
148 words
A method of preparing a composite scouring pad which comprises placing a non-woven layer and a flexible foam layer in juxtaposition to each other, passing a plurality of barbed needles through the non-woven layer and thence through the foam layer whereby some fibers from said non-woven layer are passed through said foam layer and emerge from the side of said foam layer opposite said non-woven layer, impregnating said non-woven layer with a resinous binder material containing abrasive particles and coating with a resinous material applied in liquid form the surface of said foam layer opposite said non-woven layer and the emergent fibers thereon, said resinous material being applied in an amount such that the thickness of the coating produced thereby does not impair the roughness of said surface provided by said emergent fibers, whereby said emergent fibers are anchored in position traversing the thickness of said foam layer.
Claim 2
Independent Claim
148 words
A method of preparing a composite scouring pad which comprises placing a non-woven layer and a flexible foam layer in juxtaposition to each other, passing a plurality of barbed needles through the non-woven layer and thence through the foam layer whereby some fibers from said non-woven layer are passed through said foam layer and emerge from the side of said foam layer opposite said non-woven layer, impregnating said non-woven layer with a resinous binder material containing abrasive particles and coating with a resinous material applied in liquid form the surface of said foam layer opposite said non-woven layer and the emergent fibers thereon, said resinous material being applied in an amount such that the thickness of the coating produced thereby does not impair the roughness of said surface provided by said emergent fibers, whereby said emergent fibers are anchored in position traversing the thickness of said foam layer.
Claim 3
Dependent Claim
23 words
The method of claim 1 wherein said resinous material applied to said opposite surface of said foam layer is cured after said application.
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) | 1979-08-24 | 1980-02-23 | 1980-08-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-08-24 | 1984-02-23 | 1984-08-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-08-24 | 1988-02-23 | 1988-08-24 | $7700.00 | Window Closed / Lapsed |