US4896453A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Growth-preventing web for ground covering
Assignee: Sotralentz SA
•
Filing: 1988-08-15
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Granted: 1990-01-30
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Expires: 2008-08-15
Abstract
Abstract A strip of vegetation-growth-blocking material for use as a ground cover as a polyethylene foil on an upper surface of which a bituminous protective and adhesive layer is applied to block ultraviolet deterioration of the foil. Gravel or a like heavy bulk material is bonded by the adhesive to the foil and a reflective layer can be applied to the gravel layer.
Inventors
- 👤 Christian Jacob
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 14:40
CPC Classifications
E; E01; E01H; E01H11/00; E02; E02D; E02D17/00; E02D17/20; Y; Y10; Y10T; Y10T442/00; Y10T442/20; Y10T442/259; Y10T442/2926; Y10T442/2992
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
108 words
A vegetation-growth-preventing web, comprising: a synthetic-resin foil layer of polyurethane or polyethylene having an upper surface; a bituminous protective layer covering said upper surface and protecting said synthetic-resin foil layer against degradation by sunlight while forming an adhesive; and a weighting layer of pieces of a relatively heavy bulk material on and substantially covering said upper surface in an amount of 5 kg/m 2 and bonded by said bituminous layer to said foil for holding said web on the ground and preventing wind-lifting thereof; a coloring layer on said weighting layer of pieces of relatively heavy bulk material, and a covering of glass beads on said coloring layer.
Claim 2
Dependent Claim
108 words
A vegetation-growth-preventing web, comprising: a synthetic-resin foil layer of polyurethane or polyethylene having an upper surface; a bituminous protective layer covering said upper surface and protecting said synthetic-resin foil layer against degradation by sunlight while forming an adhesive; and a weighting layer of pieces of a relatively heavy bulk material on and substantially covering said upper surface in an amount of 5 kg/m 2 and bonded by said bituminous layer to said foil for holding said web on the ground and preventing wind-lifting thereof; a coloring layer on said weighting layer of pieces of relatively heavy bulk material, and a covering of glass beads on said coloring layer.
Claim 3
Dependent Claim
17 words
The vegetation-growth-preventing web defined in claim 1 wherein said bituminous protective layer is composed of road-surfacing bitumen.
Claim 4
Dependent Claim
25 words
The vegetation-growth-preventing web defined in claim 1 wherein said bituminous protective layer is composed of a composition containing road-surfacing bitumen and at least one elastomer.
Claim 5
Dependent Claim
24 words
The vegetation-growth-preventing web defined in claim 2 wherein said weighting layer of pieces of relatively heavy bulk material is composed of a stony granulate.
Claim 6
Dependent Claim
14 words
The vegetation-growth-preventing web defined in claim 4 wherein said stony granulate is a gravel.
Claim 7
Dependent Claim
22 words
The vegetation-growth-preventing web defined in claim 4 wherein said granulate has particles of a particle size between two millimeters and five centimeters.
Claim 8
Dependent Claim
23 words
The vegetation-growth-preventing web defined in claim 6 wherein said glass beads are provided in at least two layers in a dense packed orientation.
Claim 9
Dependent Claim
24 words
The vegetation-growth-preventing web defined in claim 1 wherein said weighting layer of pieces of relatively heavy bulk material is composed of a stony granulate.
Claim 10
Dependent Claim
14 words
The vegetation-growth-preventing web defined in claim 11 wherein said stony granulate is a gravel.
Claim 11
Dependent Claim
22 words
The vegetation-growth-preventing web defined in claim 11 wherein said granulate has particles of a particle size between two millimeters and five centimeters.
Claim 12
Dependent Claim
23 words
The vegetation-growth-preventing web defined in claim 1 wherein said glass beads are provided in at least two layers in a dense packed orientation.
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) | 1993-01-29 | 1993-07-31 | 1994-01-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1997-01-29 | 1997-07-31 | 1998-01-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2001-01-29 | 2001-07-31 | 2002-01-30 | $7700.00 | Window Closed / Lapsed |