Patent US4406403A successfully refreshed from Google Patents.
US4406403A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of providing a containment reservoir
Assignee: WELLMAN QULINE Inc A CORP OF DE
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Filing: 1981-06-15
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Granted: 1983-09-27
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Expires: 2001-06-15
Abstract
Abstract A containment reservoir for a liquid, such as petroleum oil, comprising, a walled ground containment space or pit, opening upwardly, with the space containing a liquid impervious flexible liner generally following the contour of the space, and with the liner comprising a layer of pervious fabric material having on at least one of its sides a layer of liquid impervious material, such as rubber, the liner being operable to prevent escape of liquid through the liner from the containment space; means are provided coacting with the liner covered containment space for removing liquid from the reservoir. A covering layer of pervious fabric material filters anything, including liquid, passing into the reservoir. A method of forming the reservoir from predetermined width strips of liner stock, and a method of retaining and salvaging oil spilled along a railroad track environment is also disclosed.
Inventors
- 👤 Robert W. Luebke
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 15:21
CPC Classifications
E; E01; E01B; E01B19/00; E01B19/006; E01B1/00; E01B1/008; E01B2/00; E01F; E01F5/00; E01B1/001; E01B2204/00; E01B2204/05; E01B2204/07
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
174 words
A method of lining an earthen containment space having sloping defining walls with a flexible liquid impervious liner generally following the contour of the containment space to define a reservoir for collecting liquid therein, comprising, providing liner stock in flexible strip form having a layer of pervious fabric material having on at least one of its sides an attached layer of liquid impervious material, such as rubber, laying a plurality of strips of the liner material with the impervious layer facing outwardly of the reservoir space and with the liner strips overlapping, adhesively securing the overlapped junctures of the liner strips together so as to restrict escape of liquid from said containment space, and extending said liner material upwardly to the level of the adjoining surface and horizontally outwardly therefrom, with the liner generally conforming to said sloping walls of the earthen containment space, and including providing a drain area within the confines of the reservoir at the lowermost level of the reservoir and toward which the sloping walls extend, for collecting liquid therein.
Claim 2
Independent Claim
174 words
A method of lining an earthen containment space having sloping defining walls with a flexible liquid impervious liner generally following the contour of the containment space to define a reservoir for collecting liquid therein, comprising, providing liner stock in flexible strip form having a layer of pervious fabric material having on at least one of its sides an attached layer of liquid impervious material, such as rubber, laying a plurality of strips of the liner material with the impervious layer facing outwardly of the reservoir space and with the liner strips overlapping, adhesively securing the overlapped junctures of the liner strips together so as to restrict escape of liquid from said containment space, and extending said liner material upwardly to the level of the adjoining surface and horizontally outwardly therefrom, with the liner generally conforming to said sloping walls of the earthen containment space, and including providing a drain area within the confines of the reservoir at the lowermost level of the reservoir and toward which the sloping walls extend, for collecting liquid therein.
Claim 3
Dependent Claim
79 words
A method in accordance with claim 1 including the step of filling the reservoir with lump material directly onto the liner, to provide a layer of ballast material therein, and then covering the ballast material with a layer of porous fabric material through which liquid can pass into the reservoir and into contact with the ballast, and including the step of providing for removal of liquid by draining through said liner material at said drain area of said reservoir.
Claim 4
Dependent Claim
28 words
A method in accordance with claim 2 wherein the removal is accomplished by providing a communicating passageway with the reservoir at said drain area adjacent the bottom thereof.
Claim 5
Dependent Claim
47 words
A method in accordance with claim 3 including providing an aperture in said liner at the juncture of the latter with said communicating passageway so as to provide liquid passing communication between the interior of said reservoir and said communicating passageway, for draining liquid from said reservoir.
Claim 6
Dependent Claim
26 words
A method in accordance with claim 1 including providing passageway drain means which in turn communicate with said drain area for removing liquid from said reservoir.
Claim 7
Independent Claim
130 words
A method of collecting liquids from along a railroad track section, such as oily liquids from diesel locomotives, comprising, providing an earthen reservoir adapted for disposal adjacent the track section and extending beneath the track section, installing a flexible liquid impervious liner in the bottom of the earthen reservoir with the liner comprising a layer of pervious fabric material having on at least one of its sides a layer of liquid impervious material such as rubber, said liner being operable to prevent escape of liquid through the liner from the containment space, filling the containment space with ballast, and covering the ballast material with a layer of pervious fabric material for preventing passage of particle like materials, such as sand, down into the ballast disposed on the liquid impervious liner.
Claim 8
Independent Claim
130 words
A method of collecting liquids from along a railroad track section, such as oily liquids from diesel locomotives, comprising, providing an earthen reservoir adapted for disposal adjacent the track section and extending beneath the track section, installing a flexible liquid impervious liner in the bottom of the earthen reservoir with the liner comprising a layer of pervious fabric material having on at least one of its sides a layer of liquid impervious material such as rubber, said liner being operable to prevent escape of liquid through the liner from the containment space, filling the containment space with ballast, and covering the ballast material with a layer of pervious fabric material for preventing passage of particle like materials, such as sand, down into the ballast disposed on the liquid impervious liner.
Claim 9
Dependent Claim
33 words
A method in accordance with claim 6 including the step of weighing down the top pervious layer of fabric material by means of lump material, to maintain the position of the pervious layer.
Claim 10
Dependent Claim
36 words
A method in accordance with claim 6 including using metal grating to weigh down the pervious layer of material intermediate the rails of said track section, and to a predetermined distance on the lateral sides thereof.
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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) | 1986-09-26 | 1987-03-28 | 1987-09-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1990-09-26 | 1991-03-28 | 1991-09-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1994-09-26 | 1995-03-28 | 1995-09-27 | $7700.00 | Window Closed / Lapsed |