US5056960A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Layered geosystem and method
Assignee: BP Corp North America Inc
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Filing: 1989-12-28
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Granted: 1991-10-15
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Expires: 2009-12-28
Abstract
Abstract A layered geosystem and method employ at least one layer of geotextile which has at least one surface friction-treated with a treatment material in a manner described herein. Contact of the friction-treated surface with an adjacent layer of, for example, geonet or geomembrane assists in preventing movement of such a layer which can occur on sloped terrain.
Inventors
- 👤 Mark L. Marienfeld
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 16:18
CPC Classifications
E; E02; E02B; E02B3/00; E02B3/04; E02B3/12; E02B3/122; B; B09; B09B; B09B1/00; E02D; E02D31/00; E02D31/002; E02D31/004
Claims Analysis
Total Claims: 32
Claim 1
Independent Claim
80 words
A layered geosystem positioned upon and in contact with the earth which comprises: a treated fabric layer which comprises a fabric having at least one surface which is friction-treated with a treatment material comprising a material selected from the group consisting of natural rubber, a polymer of an acrylate, a styrene-diene copolymer, a polymer of vinyl acetate, and mixtures thereof; at least one additional layer which is positioned so as to be in contact with said at least one surface.
Claim 2
Dependent Claim
80 words
A layered geosystem positioned upon and in contact with the earth which comprises: a treated fabric layer which comprises a fabric having at least one surface which is friction-treated with a treatment material comprising a material selected from the group consisting of natural rubber, a polymer of an acrylate, a styrene-diene copolymer, a polymer of vinyl acetate, and mixtures thereof; at least one additional layer which is positioned so as to be in contact with said at least one surface.
Claim 3
Dependent Claim
30 words
A layered geosystem as recited in claim 1 wherein at least a portion of said geosystem is sloped so as to define an acute angle with respect to the horizontal.
Claim 4
Dependent Claim
22 words
A layered geosystem as recited in claim 2 wherein said acute angle is in the range of about 10° to about 60°.
Claim 5
Dependent Claim
15 words
A layered geosystem as recited in claim 1 wherein said fabric comprises nonwoven synthetic fibers.
Claim 6
Dependent Claim
25 words
A layered geosystem as recited in claim 4 wherein said fibers comprise a polymer selected from the group consisting of polypropylene, polyester, polyethylene, and polyamide.
Claim 7
Dependent Claim
13 words
A layered geosystem as recited in claim 5 wherein said polymer is polypropylene.
Claim 8
Dependent Claim
14 words
A layered geosystem as recited in claim 6 wherein said fibers are staple fibers.
Claim 9
Dependent Claim
36 words
A layered geosystem as recited in claim 7 wherein said treatment material has a weight which is in the range of about 1% to about 15% of the weight of said fabric in the untreated condition.
Claim 10
Dependent Claim
18 words
A layered geosystem as recited in claim 8 wherein said weight range is about 5% to about 10%.
Claim 11
Dependent Claim
37 words
A layered geosystem as recited in claim 1 wherein said at least one additional layer comprises a substantially impervious membrane layer having a surface thereof in contact with said at least one friction-treated surface of said fabric.
Claim 12
Dependent Claim
36 words
A layered geosystem as recited in claim 1 wherein said at least one additional layer comprises a permeable net layer having a side thereof in contact with said at least one friction-treated surface of said fabric.
Claim 13
Dependent Claim
65 words
A layered geosystem as recited in claim 1 wherein said fabric has first and second opposing friction-treated surfaces, and wherein said at least one layer comprises: a substantially impervious membrane layer having a surface thereof in contact with said first friction-treated surface of said fabric; and a permeable net layer having a first side thereof in contact with said second friction-treated surface of said fabric.
Claim 14
Dependent Claim
48 words
A layered geosystem as recited in claim 12 wherein said net layer has a second side opposite said first side, said geosystem further comprising a second treated fabric layer comprising a fabric having a friction-treated surface which is in contact with said second side of said net layer.
Claim 15
Dependent Claim
23 words
A layered geosystem as recited in claim 13 wherein each of said membrane layer and said net layer comprise a flexible plastic material.
Claim 16
Dependent Claim
15 words
A layered geosystem as recited in claim 14 wherein said flexible plastic material is polyethylene.
Claim 17
Independent Claim
120 words
A method of forming a layered geosystem which comprises the steps of: (a) providing a treated fabric layer which comprises a fabric having at least one surface which is friction-treated with a treatment material comprising a material selected from the group consisting of natural rubber, a polymer of an acrylate, a styrene-diene copolymer, a polymer of vinyl acetate, and mixtures thereof; (b) providing at least one additional layer; (c) positioning said treated fabric layer and said at least one additional layer to form the layered geosystem such that the thus formed layered geosystem lies upon and in contact with the earth and such that said at least one additional layer contacts said at least one friction-treated surface of said fabric.
Claim 18
Independent Claim
120 words
A method of forming a layered geosystem which comprises the steps of: (a) providing a treated fabric layer which comprises a fabric having at least one surface which is friction-treated with a treatment material comprising a material selected from the group consisting of natural rubber, a polymer of an acrylate, a styrene-diene copolymer, a polymer of vinyl acetate, and mixtures thereof; (b) providing at least one additional layer; (c) positioning said treated fabric layer and said at least one additional layer to form the layered geosystem such that the thus formed layered geosystem lies upon and in contact with the earth and such that said at least one additional layer contacts said at least one friction-treated surface of said fabric.
Claim 19
Dependent Claim
33 words
A method as recited in claim 16 wherein said geosystem is positioned such that at least a portion thereof is sloped so as to define an acute angle with respect to the horizontal.
Claim 20
Dependent Claim
21 words
A method as recited in claim 17 wherein said acute angle is in the range of about 10° to about 60°.
Claim 21
Dependent Claim
14 words
A method as recited in claim 16 wherein said fabric comprises nonwoven synthetic fibers.
Claim 22
Dependent Claim
24 words
A method as recited in claim 19 wherein said fibers comprise a polymer selected from the group consisting of polypropylene, polyester, polyethylene, and polyamide.
Claim 23
Dependent Claim
12 words
A method as recited in claim 20 wherein said polymer is polypropylene.
Claim 24
Dependent Claim
13 words
A method as recited in claim 21 wherein said fibers are staple fibers.
Claim 25
Dependent Claim
35 words
A method as recited in claim 22 wherein said treatment material has a weight which is in the range of about 1% to about 15% of the weight of said fabric in the untreated condition.
Claim 26
Dependent Claim
17 words
A method as recited in claim 23 wherein said weight range is about 5% to about 10%.
Claim 27
Dependent Claim
43 words
A method as recited in claim 16 wherein said at least one additional layer comprises a substantially impervious membrane layer having a surface thereof which is positioned in step (c) so as to contact said at least one friction-treated surface of said fabric.
Claim 28
Dependent Claim
42 words
A method as recited in claim 16 wherein said at least one additional layer comprises a permeable net layer having a side thereof which is positioned in step (c) so as to contact said at least one friction-treated surface of said fabric.
Claim 29
Dependent Claim
86 words
A method as recited in claim 16 wherein said fabric has first and second opposing friction-treated surfaces, and wherein said at least one additional layer comprises a substantially impervious membrane layer having a surface thereof which is positioned in step (c) so as to contact said first friction-treated surface of said fabric, said at least one additional layer further comprising a permeable net layer having a first side thereof which is positioned in step (c) so as to contact said second friction-treated surface of said fabric.
Claim 30
Dependent Claim
57 words
A method as recited in claim 27 wherein said net layer has a second side opposite said first side, said method further comprising positioning a second treated fabric layer, which comprises a fabric having a friction-treated surface, such that said friction-treated surface of said second treated fabric layer is in contact said second side of said net.
Claim 31
Dependent Claim
22 words
A method as recited in claim 28 wherein each of said membrane layer and said net layer comprise a flexible plastic material.
Claim 32
Dependent Claim
14 words
A method as recited in claim 29 wherein said flexible plastic material is polyethylene.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1994-10-14 | 1995-04-15 | 1995-10-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1998-10-14 | 1999-04-15 | 1999-10-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2002-10-14 | 2003-04-15 | 2003-10-15 | $7700.00 | Window Closed / Lapsed |