Patent US4264450A successfully refreshed from Google Patents.
US4264450A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fibrous disc oil skimmer
Assignee: Shell USA Inc
•
Filing: 1979-12-21
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Granted: 1981-04-28
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Expires: 1999-12-21
Abstract
Abstract A method and apparatus are provided for removing oil from the surface of water by means of one or a multiplicity of discs which are provided with either or a combination of oil-absorbent bristles and oil-absorbent materials disposed on the flat surfaces of the disc, the disc being disposed partially in the oil and partially in a vapor space thereabove, rotating the discs to cycle the bristles and/or oil-absorbent material alternately from the oil on the water to the vapor space thereabove, allowing the oil to adhere or absorb into the bristles or absorbent material and then removing the oil from the bristles and/or oil-absorbent material while the bristles and/or oil-absorbent material are in the vapor space.
Inventors
- 👤 Ray R. Ayers
- 👤 Kenneth L. Bickham
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 16:35
CPC Classifications
E; E02; E02B; E02B15/00; E02B15/04; E02B15/10; E02B15/102; Y; Y02; Y02A; Y02A20/00; Y02A20/20; Y02A20/204
Claims Analysis
Total Claims: 34
Claim 1
Independent Claim
86 words
A method for removing oil from the surface of water comprising, providing a disc having oil-wetable bristles, disposing the disc into contact with the oil on the water, at least part of the disc being in a vapor space above the oil on the water, rotating the disc to cycle the bristles alternately from the oil on the water to the vapor space, allowing the oil to adhere to the bristles, and removing the oil from the bristles while the bristles are in the vapor space.
Claim 2
Independent Claim
86 words
A method for removing oil from the surface of water comprising, providing a disc having oil-wetable bristles, disposing the disc into contact with the oil on the water, at least part of the disc being in a vapor space above the oil on the water, rotating the disc to cycle the bristles alternately from the oil on the water to the vapor space, allowing the oil to adhere to the bristles, and removing the oil from the bristles while the bristles are in the vapor space.
Claim 3
Dependent Claim
18 words
The method of claim 1 wherein a wiper blade is utilized to remove the oil from the bristles.
Claim 4
Dependent Claim
25 words
The method of claim 1 wherein the disc is substantially circular and flat and the bristles extend outwardly from the flat surfaces of the disc.
Claim 5
Dependent Claim
18 words
The method of claim 1 wherein the disc is disposed substantially vertically into the oil on the water.
Claim 6
Dependent Claim
14 words
The method of claim 1 wherein multiple discs are rotated about a common axis.
Claim 7
Dependent Claim
34 words
The method of claim 1 wherein the oil from the disc is removed to an adjacent enclosure containing a thickened oil layer and oil is continuously, or periodically, removed by suction from the enclosure.
Claim 8
Dependent Claim
22 words
The method of claim 6 wherein a flexible curtain terminating in weights extends downwardly from the enclosure to form an open-ended box.
Claim 9
Independent Claim
97 words
A method for removing oil from the surface of water comprising, providing a disc having a layer of oilabsorbent material, disposing the disc into contact with the oil on the water, at least part of the disc being in a vapor space above the oil on the water, rotating the disc to cycle each part of the oil-absorbent material alternately from the oil on the water to the vapor space, allowing the oil to be absorbed by the absorbent material, and removing the oil from the absorbent material while the absorbent material is in the vapor space.
Claim 10
Independent Claim
97 words
A method for removing oil from the surface of water comprising, providing a disc having a layer of oilabsorbent material, disposing the disc into contact with the oil on the water, at least part of the disc being in a vapor space above the oil on the water, rotating the disc to cycle each part of the oil-absorbent material alternately from the oil on the water to the vapor space, allowing the oil to be absorbed by the absorbent material, and removing the oil from the absorbent material while the absorbent material is in the vapor space.
Claim 11
Dependent Claim
18 words
The method of claim 8 wherein a roller is utilized to remove the oil from the absorbent material.
Claim 12
Dependent Claim
26 words
The method of claim 8 wherein the disc is substantially circular and flat and the absorbent material is arranged on the flat surfaces of the disc.
Claim 13
Dependent Claim
18 words
The method of claim 8 wherein the disc is disposed substantially vertically into the oil on the water.
Claim 14
Dependent Claim
14 words
The method of claim 8 wherein multiple discs are rotated about a common axis.
Claim 15
Dependent Claim
34 words
The method of claim 8 wherein the oil from the disc is removed to an adjacent enclosure containing a thickened oil layer and oil is continuously or periodically removed by suction from the enclosure.
Claim 16
Dependent Claim
17 words
The method of claim 13 wherein a flexible curtain terminating in weights extends downwardly from the enclosure.
Claim 17
Dependent Claim
14 words
The method of claim 8 wherein oil-adsorbent bristles extend outwardly from the oil-absorbent material.
Claim 18
Dependent Claim
83 words
Apparatus for removing oil from the surface of water comprising, a disc having oil-wetable bristles, a lower part of the disc being in the oil on the water and an upper part of the disc being in a vapor space above the oil on the water, means for rotating the disc to cycle the bristles alternately from the oil on the water to the vapor space, and means for removing the oil from the bristles while the bristles are in the vapor space.
Claim 19
Dependent Claim
83 words
Apparatus for removing oil from the surface of water comprising, a disc having oil-wetable bristles, a lower part of the disc being in the oil on the water and an upper part of the disc being in a vapor space above the oil on the water, means for rotating the disc to cycle the bristles alternately from the oil on the water to the vapor space, and means for removing the oil from the bristles while the bristles are in the vapor space.
Claim 20
Dependent Claim
25 words
The apparatus of claim 16 wherein the disc is substantially circular and flat and the bristles extend outwardly from the flat surfaces of the disc.
Claim 21
Dependent Claim
18 words
The apparatus of claim 16 wherein the disc is disposed substantially vertically into the oil on the water.
Claim 22
Dependent Claim
22 words
The method of claim 16 wherein a wiper blade is operatively associated with the disc for removing the oil from the bristles.
Claim 23
Dependent Claim
20 words
The apparatus of claim 16 wherein multiple discs are provided with means for rotating the disc about a common axis.
Claim 24
Dependent Claim
39 words
The apparatus of claim 16 wherein means is provided for removing the oil from the disc to an adjacent enclosure containing a thickened oil layer, and suction means is provided for continuously or periodically removing oil from the enclosure.
Claim 25
Dependent Claim
22 words
The apparatus of claim 21 wherein a flexible curtain terminating in weights extends downwardly from the enclosure to form an open-ended box.
Claim 26
Independent Claim
91 words
An apparatus for removing oil from the surface of water comprising, a disc having an oil-absorbent material thereon, part of the disc being disposed in a vapor space above the oil on the water and part of the disc being disposed in the oil on the water, means for rotating the disc to cycle each part of the oil-absorbent material alternately from the oil on the water to the vapor space thereabove, and means for removing the oil from the oil-absorbent material while the oil-absorbent material is in the vapor space.
Claim 27
Independent Claim
91 words
An apparatus for removing oil from the surface of water comprising, a disc having an oil-absorbent material thereon, part of the disc being disposed in a vapor space above the oil on the water and part of the disc being disposed in the oil on the water, means for rotating the disc to cycle each part of the oil-absorbent material alternately from the oil on the water to the vapor space thereabove, and means for removing the oil from the oil-absorbent material while the oil-absorbent material is in the vapor space.
Claim 28
Dependent Claim
21 words
The apparatus of claim 23 wherein a roller is operatively associated with the disc for removing oil from the oil-absorbent material.
Claim 29
Dependent Claim
26 words
The apparatus of claim 23 wherein the disc is substantially circular and flat and the oil-absorbent material is arranged on the flat surfaces of the disc.
Claim 30
Dependent Claim
18 words
The apparatus of claim 23 wherein the disc is disposed substantially vertically into the oil on the water.
Claim 31
Dependent Claim
17 words
The apparatus of claim 23 wherein means is provided to rotate multiple discs about a common axis.
Claim 32
Dependent Claim
39 words
The apparatus of claim 23 wherein means is provided for removing the oil from the disc to an adjacent enclosure containing a thickened oil layer, and suction means is provided to continuously or periodically remove oil from the enclosure.
Claim 33
Dependent Claim
17 words
The apparatus of claim 28 wherein a flexible curtain terminating in weights extends downwardly from the enclosure.
Claim 34
Dependent Claim
17 words
The apparatus of claim 23 wherein oil-adsorbent bristles extend outwardly from the surface of the oil-absorbent material.
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) | 1984-04-27 | 1984-10-27 | 1985-04-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1988-04-27 | 1988-10-27 | 1989-04-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1992-04-27 | 1992-10-27 | 1993-04-28 | $7700.00 | Window Closed / Lapsed |