US4501788A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Waterproofing soil
Assignee: Claymax Corp
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Filing: 1982-09-30
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Granted: 1985-02-26
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Expires: 2002-09-30
Abstract
Abstract A method and a product providing for waterproofing soil utilizing a flexible non-biodegradable support capable of venting gas coated with water swellable bentonite and covering the soil to be waterproofed with the coated support.
Inventors
- 👤 Arthur J. Clem
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 03:58
CPC Classifications
E; E02; E02B; E02B3/00; E02B3/04; E02B3/12; E02B3/122; E02B3/126; E02D; E02D31/00; E02D31/002; E02D31/004; Y; Y10; Y10S; Y10S428/00; Y10S428/913; Y10S588/00; Y10S588/90; Y10T; Y10T428/00; Y10T428/25; Y10T428/252; Y10T442/00; Y10T442/20
Claims Analysis
Total Claims: 19
Claim 1
Independent Claim
23 words
A flexible sheet for providing a water barrier comprising a flexible non-biodegradable support capable of venting gas and coated with water swellable bentonite.
Claim 2
Dependent Claim
23 words
A flexible sheet for providing a water barrier comprising a flexible non-biodegradable support capable of venting gas and coated with water swellable bentonite.
Claim 3
Dependent Claim
27 words
A flexible sheet as in claim 1, wherein said flexible non-biodegradable support capable of venting gas has a lateral gas permeability of greater than 1×10 -6 cm/sec.
Claim 4
Dependent Claim
27 words
A flexible sheet as in claim 1, wherein said flexible non-biodegradable support capable of venting gas has a lateral gas permeability of greater than 1×10 -3 cm/sec.
Claim 5
Dependent Claim
27 words
A flexible sheet as in claim 1, wherein said flexible non-biodegradable support capable of venting gas has a lateral gas permeability of greater than 1×10 -2 cm/sec.
Claim 6
Dependent Claim
43 words
A flexible sheet as in claim 1, wherein said flexible non-biodegradable support capable of venting gas is made of a material selected from the group consisting of woven or non-woven fabrics and has a lateral gas permeability of greater than 1×10 -3 cm/sec.
Claim 7
Dependent Claim
20 words
A flexible sheet as in claim 1, wherein said water swellable bentonite coating is between three and ten cm thick.
Claim 8
Dependent Claim
28 words
A flexible sheet as in claim 1, wherein on at least one edge of said sheet, the flexible non-biodegradable support is not coated with said water swellable bentonite.
Claim 9
Dependent Claim
30 words
A flexible sheet as in claim 1, wherein said coating of water swellable bentonite is covered with a mat capable of retaining dislodged particles of said water swellable bentonite coating.
Claim 10
Dependent Claim
31 words
A sheet as in claim 8, wherein said flexible non-biodegradable support is in roll form and said coating of water swellable bentonite does not cover two adjacent edges of said support.
Claim 11
Independent Claim
37 words
A method for forming a water impervious flexible sheet comprising coating a flexible non-biodegradable support capable of venting gas with a liquid adhesive, spreading a water swellable bentonite on said liquid adhesive, and drying said coated support.
Claim 12
Independent Claim
37 words
A method for forming a water impervious flexible sheet comprising coating a flexible non-biodegradable support capable of venting gas with a liquid adhesive, spreading a water swellable bentonite on said liquid adhesive, and drying said coated support.
Claim 13
Dependent Claim
33 words
A method as in claim 10, wherein before drying said coated support, at least one more coating with a liquid adhesive and spreading of water swellable bentonite on said liquid adhesive is made.
Claim 14
Dependent Claim
22 words
A method as in claim 10, wherein, before drying said coated support, a mat is placed over the water swellable bentonite coating.
Claim 15
Independent Claim
135 words
A method for waterproofing an area of soil comprising coating a flexible non-biodegradable support capable of venting gas with a water swellable bentonite providing a barrier of water swellable bentonite to provide coated sheets, covering the soil to be waterproofed with a plurality of said coated sheets with said coating of bentonite facing up and said support capable of venting gas facing down and aligning each sheet so that there is uninterrupted contact of each of said bentonite barriers and each of said supports capable of venting gas in order to provide a continuous and uninterrupted barrier of bentonite facing the area from which water is to be barred and continuous and uninterrupted layer of non-biodegradable support capable of venting gas with said support capable of venting gas open at least partially to the atmosphere.
Claim 16
Independent Claim
135 words
A method for waterproofing an area of soil comprising coating a flexible non-biodegradable support capable of venting gas with a water swellable bentonite providing a barrier of water swellable bentonite to provide coated sheets, covering the soil to be waterproofed with a plurality of said coated sheets with said coating of bentonite facing up and said support capable of venting gas facing down and aligning each sheet so that there is uninterrupted contact of each of said bentonite barriers and each of said supports capable of venting gas in order to provide a continuous and uninterrupted barrier of bentonite facing the area from which water is to be barred and continuous and uninterrupted layer of non-biodegradable support capable of venting gas with said support capable of venting gas open at least partially to the atmosphere.
Claim 17
Dependent Claim
19 words
A method as in claim 13, wherein said coated sheets are then covered with a protective layer of soil.
Claim 18
Dependent Claim
25 words
A method as in claim 13, wherein said coated sheets are placed both below and above the area from which water is to be barred.
Claim 19
Dependent Claim
26 words
A method as in claim 13, wherein said support capable of venting gas is only open to the atmosphere after traveling through a gas treatlng means.
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) | 1988-02-26 | 1988-08-27 | 1989-02-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1992-02-26 | 1992-08-27 | 1993-02-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1996-02-26 | 1996-08-27 | 1997-02-26 | $7700.00 | Window Closed / Lapsed |