Patent US4477938A successfully refreshed from Google Patents.
US4477938A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Material which has abrasive properties and method of making same
Assignee: Individual
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Filing: 1982-09-29
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Granted: 1984-10-23
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Expires: 2002-09-29
Abstract
Abstract A method of producing a cleaning cloth having abrasive properties is disclosed. The method comprises passing a composite material consisting of a needle bonded fabric, a woven or knitted fabric and a layer of foamed synthetic plastics material past a heat source which is preferably a gas flame. The gas flame is directed at the stitches of the exposed face of the needle bonded fabric and the layer of knitted or woven fabric is sandwiched between the needle bonded fabric and the layer of foamed material. The stitches of the fabric form hard, abrasive nodules the arrangement of which varies with the stitch pattern.
Inventors
- 👤 Samuel Rogut
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 19:44
CPC Classifications
D; D04; D04H; D04H1/00; D04H1/40; D04H1/44; D04H1/46; D04H1/48; D04H1/485; A; A47; A47L; A47L17/00; A47L17/04; A47L17/08; B; B32; B32B; B32B27/00; B32B27/02; B32B27/32; B32B27/36; B32B5/00; B32B5/02; B32B5/06; B32B5/18; B32B5/22; D04H1/42; D04H1/4282; D04H1/4291; D04H1/4326; D04H1/435; D04H13/00; Y; Y10; Y10T; Y10T428/00; Y10T428/24; Y10T428/24033; Y10T428/24041; Y10T428/2405; Y10T428/249921; Y10T428/249953; Y10T428/249981; Y10T428/31
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
77 words
A method of manufacturing a material which has abrasive properties which method comprises fabricating a composite structure comprising a needle bonded fabric the fibres of which are of polypropylene or polyester, a backing layer of foamed synthetic plastics material and a knitted or woven fabric sandwiched between the foamed plastics material and the needle bonded polypropylene or polyester, and applying heat to the exposed face of said needle bonded polypropylene or polyester to form hard abrasive nodules.
Claim 2
Independent Claim
77 words
A method of manufacturing a material which has abrasive properties which method comprises fabricating a composite structure comprising a needle bonded fabric the fibres of which are of polypropylene or polyester, a backing layer of foamed synthetic plastics material and a knitted or woven fabric sandwiched between the foamed plastics material and the needle bonded polypropylene or polyester, and applying heat to the exposed face of said needle bonded polypropylene or polyester to form hard abrasive nodules.
Claim 3
Dependent Claim
69 words
A cleaning cloth of composite construction and comprising a piece of woven or knitted fabric, a layer of foamed synthetic plastics material, and a needle bonded fabric which has been heated to form hard abrasive nodules, said foamed synthetic plastics material layer being between said piece of woven or knitted fabric and said needle bonded fabric and the nodules being on the exposed face of said needle bonded fabric.
Claim 4
Dependent Claim
69 words
A cleaning cloth of composite construction and comprising a piece of woven or knitted fabric, a layer of foamed synthetic plastics material, and a needle bonded fabric which has been heated to form hard abrasive nodules, said foamed synthetic plastics material layer being between said piece of woven or knitted fabric and said needle bonded fabric and the nodules being on the exposed face of said needle bonded fabric.
Claim 5
Dependent Claim
37 words
A cleaning cloth according to claim 2 in which said needle bonded fabric, layer and piece of woven or knitted fabric are secured together by adhesive or by stitching, or by a combination of adhesive and stitching.
Claim 6
Dependent Claim
33 words
A cleaning cloth according to claim 3 in which said needle bonded fabric, layer and piece of woven or knitted fabric are adhered to one another and then stitched around the edges thereof.
Claim 7
Dependent Claim
17 words
A cleaning cloth according to claim 2, 3 or 4, in which said fibres are of polypropylene.
Claim 8
Independent Claim
73 words
A method of manufacturing a material which has abrasive properties, which method comprises applying heat to one face of a needle bonded fabric the other face of which as adhered to a woven or knitted textile fabric which itself is sandwiched between the needle bonded fabric and a layer of foamed synthetic plastics material, the heat converting all or some of the protruding fibers of the needle bonded fabrics into hard abrasive nodules.
Claim 9
Independent Claim
73 words
A method of manufacturing a material which has abrasive properties, which method comprises applying heat to one face of a needle bonded fabric the other face of which as adhered to a woven or knitted textile fabric which itself is sandwiched between the needle bonded fabric and a layer of foamed synthetic plastics material, the heat converting all or some of the protruding fibers of the needle bonded fabrics into hard abrasive nodules.
Claim 10
Dependent Claim
48 words
A method as claimed in claim 6, in which said layer of foamed synthetic plastics material is adhered to said textile fabric, the bond between the textile fabric and the foamed synthetic plastics material being stronger than the bond between the needle. bonded fabric and the textile fabric.
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) | 1987-10-23 | 1988-04-23 | 1988-10-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1991-10-23 | 1992-04-23 | 1992-10-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1995-10-23 | 1996-04-23 | 1996-10-23 | $7700.00 | Window Closed / Lapsed |