US3949113A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Liner for reservoir of layered liquids
Assignee: Phillips Petroleum Co
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Filing: 1971-12-27
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Granted: 1976-04-06
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Expires: 1991-12-27
Abstract
Abstract A reservoir containing layered liquids is lined with a liner comprising a reaction resistant material lining the portion of the reservoir in contact with a reactive liquid with the remainder of the reservoir lined with a material that is not resistant to reaction with the reactive liquid. In a specific embodiment asphalt impregnated nonwoven fabric is used to line a reservoir portion in contact with water and butyl rubber impregnated nonwoven fabric is used to line the portion of the reservoir in contact with a hydrocarbon liquid floating on top of the water layer. In a specific embodiment sheets of liner material are fastened together in a liquid proof seal produced by facing liner sheets to be joined together, overlapping the face sheets with a layer of nonwoven fabric, sewing through the four strata laminate thus produced, and treating the nonwoven fabric with a liquid proofing substance.
Inventors
- 👤 Homer L. Draper
- 👤 Lew T. Gray
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 11:52
CPC Classifications
B; B65; B65D; B65D90/00; B65D90/02; B65D90/04; B65D90/046; B32; B32B; B32B5/00; B32B5/22; B32B5/24; B32B5/26; B32B3/00; B32B3/02; B32B5/02; B32B5/06; B32B2255/00; B32B2255/02; B32B2439/00; Y; Y10; Y10T; Y10T428/00; Y10T428/19; Y10T428/24; Y10T428/24033; Y10T428/31504; Y10T428/31815; Y10T428/31826; Y10T442/00; Y10T442/20; Y10T442/2221; Y10T442/60; Y10T442/659; Y10T442/668; Y10T442/696
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
149 words
A liner for a reservoir which contains distinct, stratified layers of liquids said liner consisting of (1) a first liner portion comprising a flexible, porous, nonwoven fabric impregnated with a liquid impervious coating of a material which is resistant to chemical reaction with a contained liquid arranged to form an impervious container of sufficient dimensions at least to contain within said first liner portion a distinct volume of said reactive liquid said first material in physical contact with both said reactive liquid and a nonreactive liquid and (2) a second liner portion joined by a fluid impervious seam to said first portion said second portion consisting of a material of construction nonresistant to the reactive liquid that is in contact with said first liner portion and arranged to contain a nonreactive liquid within said second liner portion said second liner portion in physical contact only with the nonreactive liquid.
Claim 2
Dependent Claim
149 words
A liner for a reservoir which contains distinct, stratified layers of liquids said liner consisting of (1) a first liner portion comprising a flexible, porous, nonwoven fabric impregnated with a liquid impervious coating of a material which is resistant to chemical reaction with a contained liquid arranged to form an impervious container of sufficient dimensions at least to contain within said first liner portion a distinct volume of said reactive liquid said first material in physical contact with both said reactive liquid and a nonreactive liquid and (2) a second liner portion joined by a fluid impervious seam to said first portion said second portion consisting of a material of construction nonresistant to the reactive liquid that is in contact with said first liner portion and arranged to contain a nonreactive liquid within said second liner portion said second liner portion in physical contact only with the nonreactive liquid.
Claim 3
Dependent Claim
36 words
A reservoir liner of claim 1 wherein said first liner portion consists of a nonwoven fabric coated with butyl rubber or a nitrile rubber and said second liner portion is a nonwoven fabric coated with asphalt.
Claim 4
Dependent Claim
36 words
A reservoir liner of claim 1 wherein said first liner portion consists of a nonwoven fabric coated with a polyurethane or acrylonitrile-butadiene styrene (ABS) and said second liner portion is a nonwoven fabric coated with asphalt.
Claim 5
Dependent Claim
16 words
A reservoir liner of claim 1 wherein said second liner portion is a thermoplastic film sheeting.
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) | 1979-04-06 | 1979-10-06 | 1980-04-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-04-06 | 1983-10-06 | 1984-04-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-04-06 | 1987-10-06 | 1988-04-06 | $7700.00 | Window Closed / Lapsed |