US4304069A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Slope protection method for planting
Assignee: Nittoku Kensetsu KK
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Filing: 1980-03-19
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Granted: 1981-12-08
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Expires: 2000-03-19
Abstract
Abstract Soil including a setting agent such as fiber-soil-cement or the like is sprayed onto a slope so that corrugations extending substantially in parallel to the horizon are formed. Grooves and ridges of the corrugated surface provide conditions for allowing plants to grow on the protected slope.
Inventors
- 👤 Tsuguo Kobayashi
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 17:16
CPC Classifications
E; E02; E02D; E02D17/00; E02D17/20; A; A01; A01C; A01C21/00
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
135 words
A method for protecting a soilless slope having substantially no soil thereon while allowing planting and plant growth thereon, comprising the steps of: preparing sprayable soil including a setting agent and having a consistency high enough to prevent sagging and running of the soil sprayed onto the slope; and spraying said sprayable soil onto the entire surface of the slope to be protected and forming a corrugated surface of the sprayed soil thereover with the corrugations of said corrugated surface extending substantially parallel to the horizon, and with said corrugated surface having a plurality of ridges spaced at a pitch of from about 25 cm to about 30 cm, the height of said ridges being from about 4 cm to about 6 cm, and the mean thickness of the sprayed soil being about 7 cm.
Claim 2
Independent Claim
135 words
A method for protecting a soilless slope having substantially no soil thereon while allowing planting and plant growth thereon, comprising the steps of: preparing sprayable soil including a setting agent and having a consistency high enough to prevent sagging and running of the soil sprayed onto the slope; and spraying said sprayable soil onto the entire surface of the slope to be protected and forming a corrugated surface of the sprayed soil thereover with the corrugations of said corrugated surface extending substantially parallel to the horizon, and with said corrugated surface having a plurality of ridges spaced at a pitch of from about 25 cm to about 30 cm, the height of said ridges being from about 4 cm to about 6 cm, and the mean thickness of the sprayed soil being about 7 cm.
Claim 3
Dependent Claim
14 words
A method as claimed in claim 1, wherein said sprayable soil includes plant seeds.
References Cited (Backward Citations)
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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) | 1984-12-07 | 1985-06-08 | 1985-12-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1988-12-07 | 1989-06-08 | 1989-12-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1992-12-07 | 1993-06-08 | 1993-12-08 | $7700.00 | Window Closed / Lapsed |