Patent US4636112A successfully refreshed from Google Patents.
US4636112A
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Method of and apparatus for controlling fluid leakage through soil
Assignee: Solmat Systems Ltd
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Filing: 1985-05-06
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Granted: 1987-01-13
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Expires: 2005-05-06
Abstract
Abstract Fluid leakage through soil in a region thereof is controlled by sequentially passing over the region to dig a plurality of parallel, laterally displaced grooves in the surface. Soil dug from each groove is temporarily stored, and a strip of sheet material is laid over a groove as it is created during each pass, the width of the strip being greater than the width of the groove. Thereafter, the temporarily stored soil is deposited on the strip such that it is covered with soil except along one edge, the other edge of the strip overlying the uncovered edge of an adjacent strip laid down during a previous pass over the region. As a consequence, a first layer of overlapping strips of sheet material covered with soil is installed over the region.
Inventors
- 👤 Avi Raviv
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 23:23
CPC Classifications
E; E02; E02B; E02B3/00; E02B3/16; E02B3/04; E02B3/12; E02B3/122
Claims Analysis
Total Claims: 15
Claim 1
Independent Claim
129 words
A method for controlling fluid leakage through soil in a region comprising: (a) sequentially passing over the region to dig a plurality of parallel, laterally spaced grooves in the surface; (b) removing the soil from a groove as it is created; (c) laying a strip of fluid impermeable sheet material over a groove during each pass, the strip being wider than the width of the groove; and (d) depositing soil dug from the groove onto the strip such that the latter is covered with soil except along one edge, the other edge of the strip overlying the uncovered edge of an adjacent strip laid down during a previous pass over the region, thereby establishing over the region a first layer of overlapping strips of sheet material covered with soil.
Claim 2
Independent Claim
129 words
A method for controlling fluid leakage through soil in a region comprising: (a) sequentially passing over the region to dig a plurality of parallel, laterally spaced grooves in the surface; (b) removing the soil from a groove as it is created; (c) laying a strip of fluid impermeable sheet material over a groove during each pass, the strip being wider than the width of the groove; and (d) depositing soil dug from the groove onto the strip such that the latter is covered with soil except along one edge, the other edge of the strip overlying the uncovered edge of an adjacent strip laid down during a previous pass over the region, thereby establishing over the region a first layer of overlapping strips of sheet material covered with soil.
Claim 3
Dependent Claim
26 words
A method according to claim 1 including the step of blowing compressed air on said one edge of a strip before the next strip is laid.
Claim 4
Dependent Claim
19 words
A method according to claim 1 including the step of spreading the earth substantially uniformly deep on the strip.
Claim 5
Dependent Claim
19 words
A method according to claim 2 including the step of mounding extra soil on the overlapped regions of strips.
Claim 6
Dependent Claim
48 words
A method according to claim 1 including the step of spreading soil dug from a groove, nonuniformly deep across the width of the strip, there being less earth in the central region of the strip whereby a mound of earth is created at the overlap of adjacent strips.
Claim 7
Dependent Claim
137 words
A method according to either claim 4 or 5 including: (a) sequentially passing over the mounds in a direction along the length thereof to dig soil therefrom, (b) removing the soil dug from a mound; (c) laying a strip of sheet material over a scraped mound during each pass; and (d) depositing soil dug from the mound onto the last mentioned strip such that it is covered with soil except along one edge, the other edge of the strip overlying the uncovered edge of an adjacent strip laid down during a previous pass over an adjacent mound whereby a second layer of overlapping strips of sheet material is laid down over the first layer of overlying strips of sheet material, the overlaps in the second layer being staggered with respect to the overlaps in the first layer.
Claim 8
Independent Claim
114 words
A method for controlling fluid leakage through soil in a region thereof comprising: (a) passing a wheeled vehicle having a scraper blade across the region for scraping a groove in the surface of the region; (b) temporarily storing the soil scraped from the groove in the vehicle; (c) laying a strip of fluid impermeable sheet material of a width greater than the width of the groove on the ground so as to cover the groove; (d) depositing soil temporarily stored in the vehicle on top of the strip; (e) laterally displacing the wheeled vehicle relative to said groove a distance greater than the width of the groove; and (f) repeating steps (a) through (e).
Claim 9
Independent Claim
114 words
A method for controlling fluid leakage through soil in a region thereof comprising: (a) passing a wheeled vehicle having a scraper blade across the region for scraping a groove in the surface of the region; (b) temporarily storing the soil scraped from the groove in the vehicle; (c) laying a strip of fluid impermeable sheet material of a width greater than the width of the groove on the ground so as to cover the groove; (d) depositing soil temporarily stored in the vehicle on top of the strip; (e) laterally displacing the wheeled vehicle relative to said groove a distance greater than the width of the groove; and (f) repeating steps (a) through (e).
Claim 10
Dependent Claim
30 words
A method according to claim 7 including the step of spreading the soil temporarily stored in the vehicle nonuniformly across the width of the strip whereby one edge remains uncovered.
Claim 11
Dependent Claim
39 words
A method according to claim 8 wherein a strip of sheet material is unrolled from a carrier located behind the trailing wheels of the vehicle whereby the trailing wheels are in contact with an undisturbed surface on the ground.
Claim 12
Dependent Claim
50 words
A method according to claim 8 wherein the strip of sheet material is unrolled from a carrier located ahead of the trailing wheels of the vehicle and the soil temporarily stored in the vehicle is deposited on the strip ahead of the trailing wheels which ride on the deposited soil.
Claim 13
Dependent Claim
16 words
A method according to claim 8 wherein the soil is spread on the strip uniformly deep.
Claim 14
Dependent Claim
28 words
A method according to claim 8 wherein the soil is spread on the strip so that the soil is deeper near the edges than near the center thereof.
Claim 15
Dependent Claim
139 words
A method according to claim 12 including: (a) passing the wheeled vehicle over the mounds in a direction along the length thereof to scrape soil therefrom; (b) temporarily storing the soil dug from a mound; (c) laying a strip of fluid impermeable sheet material over a scraped mound during each pass; and (d) depositing soil scraped from the mound onto the last mentioned strip such that it is covered with soil except along one edge, the other edge of the strip overlying the uncovered edge of an adjacent strip laid down during a previous pass over an adjacent mound whereby a second layer of overlapping strips of sheet material is laid down over the first layer of overlying strips of sheet material, the overlaps in the second layer being staggered with respect to the overlaps in the first layer.
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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) | 1990-01-12 | 1990-07-14 | 1991-01-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1994-01-12 | 1994-07-14 | 1995-01-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1998-01-12 | 1998-07-14 | 1999-01-13 | $7700.00 | Window Closed / Lapsed |