US3680319A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Liquid impounding structure
Assignee: Phillips Petroleum Co
•
Filing: 1970-09-18
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Granted: 1972-08-01
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Expires: 1990-09-18
Abstract
Abstract A liquid impounding structure is constructed comprising a compacted particulate wall completely enclosed by a protective incasement of a nonwoven fabric coated with asphaltic material.
Inventors
- 👤 Homer L Draper
- 👤 Duane W Gagle
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 19:31
CPC Classifications
E; E02; E02D; E02D29/00; E02D29/02; E02B; E02B3/00; E02B3/04; E02B3/10
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
26 words
The method of claim 1 wherein said porous fabric impregnated with an asphaltic material comprises a continuous sheet for said base and covering said exposed surface.
Claim 2
Dependent Claim
32 words
The method of claim 1 wherein said porous fabric impregnated with an asphaltic material covering the exposed surfaces of the wall is treated to create a surface resistant to the liquid impounded.
Claim 3
Dependent Claim
15 words
The method of claim 1 wherein said particulate material is composited with an asphaltic material.
Claim 4
Dependent Claim
20 words
The method of claim 4 wherein said particulate material is sand and said porous fabric is a nonwoven polyolefin fabric.
Claim 5
Dependent Claim
56 words
A liquid impounding wall comprising (1 ) a base of porous fabric impregnated with an asphaltic material, (2 ) resting on said base a structurally stable wall constructed of particulate material, and (3 ) a porous fabric impregnated with asphaltic material covering the exposed surface of said wall and sealed to the impregnated porous fabric base.
Claim 6
Dependent Claim
38 words
The impounding wall of claim 6 wherein the porous fabric impregnated with an asphaltic material covering the surfaces of the wall exposed to the impounded liquid is treated to create a surface specifically resistant to the impounded liquid.
Claim 7
Dependent Claim
22 words
The liquid impounding wall of claim 6 wherein said particulate material as sand and said porous fabric is a nonwoven polyolefin fabric.
Claim 8
Dependent Claim
17 words
The liquid impounding wall of claim 6 wherein said particulate material is composited with an asphaltic material.
References Cited (Backward Citations)
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Cited
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Cited
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Cited
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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) | 1975-08-01 | 1976-01-31 | 1976-08-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-08-01 | 1980-01-31 | 1980-08-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-08-01 | 1984-01-31 | 1984-08-01 | $7700.00 | Window Closed / Lapsed |