US3901615A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Surface layer for roadways and a process for preparing said layer
Assignee: CHIMIQUE ROUTIERE ET D'ENTREPRISE GENERALE Ste
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Filing: 1974-05-24
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Granted: 1975-08-26
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Expires: 1994-05-24
Abstract
Abstract The invention concerns a new liquidtight rough surface layer for roadways, for example roads and highroads, and the process for preparing said surface layer. According to this process there are spread in the hot state on the roadway about 4-20 kg/sq.m of a grout comprising, by weight, about 12-30% of a hydrocarbonaceous binder, about 20-40% of filler, and about 30-60% of fine sand, and, immediately after the spreading of the grout and before the cooling thereof, projecting on its surface hard granulates or particles constituting gripping elements.
Inventors
- 👤 Marcel Ceintrey
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 21:18
CPC Classifications
E; E01; E01C; E01C7/00; E01C7/08; E01C7/35; E01C7/358
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
94 words
A liquidtight and rough surface layer for roadways comprising a layer of about 4-20 kg/sq.m of a solidified grout comprising, by weight, about 12-30% of a hydrocarbonaceous binder, which comprises, by weight, 60-80% of a bitumen having a penetration of 20/30 to 80/100, 10-30% of an oil selected from the group consisting of a heavy anthracenic oil and a chrysene oil, and 210% of an elastomer; about 20-40% of filler and about 30-60% of find sand; and hard granulates set in said grout layer and constituting gripping elements and projecting above said grout layer.
Claim 2
Dependent Claim
94 words
A liquidtight and rough surface layer for roadways comprising a layer of about 4-20 kg/sq.m of a solidified grout comprising, by weight, about 12-30% of a hydrocarbonaceous binder, which comprises, by weight, 60-80% of a bitumen having a penetration of 20/30 to 80/100, 10-30% of an oil selected from the group consisting of a heavy anthracenic oil and a chrysene oil, and 210% of an elastomer; about 20-40% of filler and about 30-60% of find sand; and hard granulates set in said grout layer and constituting gripping elements and projecting above said grout layer.
Claim 3
Dependent Claim
32 words
A surface layer as claimed in claim 1, wherein the elastomer is selected from the group consisting of a butadiene-styrene copolymer, an ethylene-vinyl derivative copolymer, a butyl rubber and a chlorinated rubber.
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) | 1978-08-25 | 1979-02-24 | 1979-08-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-08-25 | 1983-02-24 | 1983-08-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-08-25 | 1987-02-24 | 1987-08-26 | $7700.00 | Window Closed / Lapsed |