US3709366A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method and apparatus for skimming a light liquid from the surface of a body of heavier liquid
Assignee: Texaco Inc
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Filing: 1970-11-20
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Granted: 1973-01-09
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Expires: 1990-11-20
Abstract
Abstract A method or apparatus which acts to create plural vortices at the surface of a body of liquid floating on top. The vortices are created by locating plural conduits with the open ends a short distance beneath the surface, and then applying a suction that is greater than the hydraulic head between the open end of the conduit and the surface of the liquid. The light surface that is drawn off may be pumped into a storage tank for permitting separation.
Inventors
- 👤 W Pruitt
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 23:03
CPC Classifications
E; E02; E02B; E02B15/00; E02B15/04; E02B15/10; E02B15/107; Y; Y10; Y10S; Y10S210/00; Y10S210/918; Y10S210/922; Y10S210/923
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
152 words
Apparatus for recovering a lighter liquid floating on the surface of another, comprising in combination a1. a plurality of open ended conduits facing upwards, a2. means for supporting said conduits with said open ends a predetermined vertical distance beneath the surface of said liquids and spaced laterally apart for forming a corresponding plurality of vortices, a3. means for connecting the other ends of said conduits (a1) to a common pipe, a4. means for applying suction to said conduits (a1) greater than the hydraulic head of vertical distance (a2), a5. a wide mouth second conduit concentrically surrounding each open ended conduit (a1), a6. means for supporting said second conduits with said wide mouths below said open ends, a7. means for applying suction to said second conduits for drawing off additional surface liquids from beneath said lighter liquids, and b. means for drawing off said lighter liquid as it is impelled into said vortices.
Claim 2
Dependent Claim
152 words
Apparatus for recovering a lighter liquid floating on the surface of another, comprising in combination a1. a plurality of open ended conduits facing upwards, a2. means for supporting said conduits with said open ends a predetermined vertical distance beneath the surface of said liquids and spaced laterally apart for forming a corresponding plurality of vortices, a3. means for connecting the other ends of said conduits (a1) to a common pipe, a4. means for applying suction to said conduits (a1) greater than the hydraulic head of vertical distance (a2), a5. a wide mouth second conduit concentrically surrounding each open ended conduit (a1), a6. means for supporting said second conduits with said wide mouths below said open ends, a7. means for applying suction to said second conduits for drawing off additional surface liquids from beneath said lighter liquids, and b. means for drawing off said lighter liquid as it is impelled into said vortices.
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) | 1976-01-09 | 1976-07-10 | 1977-01-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-01-09 | 1980-07-10 | 1981-01-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-01-09 | 1984-07-10 | 1985-01-09 | $7700.00 | Window Closed / Lapsed |