Patent US4197204A successfully refreshed from Google Patents.
US4197204A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Device for the separation of immiscible liquid mixtures
Assignee: Akzona Inc
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Filing: 1978-05-01
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Granted: 1980-04-08
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Expires: 1998-05-01
Abstract
Abstract A tubular device for separating liquid-liquid systems, said device having at least one slot covered with a sheet structure permeable to only one of the liquids, a collecting means for the separated liquid and means for reinforcing the tubular device to prevent compression or collapse thereof.
Inventors
- 👤 Nikolaus Mathes
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 23:07
CPC Classifications
E; E02; E02B; E02B15/00; E02B15/04; E02B15/06; B; B01; B01D; B01D17/00; B01D17/02; B01D17/0208; B01D17/0214; B01D17/08; B01D17/10; Y; Y10; Y10S; Y10S210/00; Y10S210/05; Y10S210/918; Y10S210/922; Y10S210/924
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
141 words
Device for the separation of mixtures of liquids immiscible in each other, consisting of a tubular or pipe-shaped structure laid out perpendicular to the direction of flow of a fluid stream and provided over its entire length with a discontinuous slit adapted to be disposed so that the width thereof extends above and below the boundary between said immiscible liquids, whereby said slit is closed by a sheet structure permeable to only one of the liquids to be separated and said tubular structure forming a collecting chamber for the said permeable liquid, the improvement comprising bracing means associated with said tubular structure for preventing either compression or collapsing of said structure comprising nonwoven elements located within said tubular or pipe-shaped structure, which nonwovens consist of a plurality of looped, intersecting melt-spun synthetic polymer filaments superficially bonded at their points of intersection.
Claim 2
Dependent Claim
141 words
Device for the separation of mixtures of liquids immiscible in each other, consisting of a tubular or pipe-shaped structure laid out perpendicular to the direction of flow of a fluid stream and provided over its entire length with a discontinuous slit adapted to be disposed so that the width thereof extends above and below the boundary between said immiscible liquids, whereby said slit is closed by a sheet structure permeable to only one of the liquids to be separated and said tubular structure forming a collecting chamber for the said permeable liquid, the improvement comprising bracing means associated with said tubular structure for preventing either compression or collapsing of said structure comprising nonwoven elements located within said tubular or pipe-shaped structure, which nonwovens consist of a plurality of looped, intersecting melt-spun synthetic polymer filaments superficially bonded at their points of intersection.
Claim 3
Dependent Claim
13 words
The device of claim 1, wherein said bracing elements are circular and spaced.
Claim 4
Dependent Claim
19 words
The device of claim 2, wherein said melt-spun, synthetic polymer filaments have a diameter of 0.1 to 2 mm.
Claim 5
Dependent Claim
19 words
The device of claim 3, wherein said melt-spun, synthetic polymer filaments have a diameter of 0.7 to 1.2 mm.
Claim 6
Dependent Claim
13 words
The device of claim 1, wherein said bracing elements have a spiral shape.
Claim 7
Dependent Claim
21 words
The device of claim 1, wherein said bracing elements are produced by molding, rolling up or folding a sheet-like nonwoven elements.
Claim 8
Dependent Claim
12 words
The device of claim 6, wherein said sheet-like nonwoven elements are profiled.
Claim 9
Dependent Claim
24 words
The device of claim 4, wherein said bracing elements exhibit a sectionally alternating larger and smaller diameter in the longitudinal direction of the device.
References Cited (Backward Citations)
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US3450632A
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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) | 1983-04-08 | 1983-10-08 | 1984-04-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1987-04-08 | 1987-10-08 | 1988-04-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1991-04-08 | 1991-10-08 | 1992-04-08 | $7700.00 | Window Closed / Lapsed |