US2613176A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Falling film type of vacuum still with rotating partial condenser
Assignee: Pure Oil Co
•
Filing: 1947-12-26
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Granted: 1952-10-07
•
Expires: 1967-12-26
Abstract
No abstract record available.
Inventors
- 👤 Albert W Goldsbarry
- 👤 Meyer S Agruss
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 07:25
CPC Classifications
B; B01; B01D; B01D1/00; B01D1/22; B01D1/222; B01D1/06
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
131 words
A FRACTIONATING COLUMN COMPRISING A PLURALITY OF CONCENTRICALLY SUPPORTED CONDUITS DEFINING A PLURALITY OF ANNULI, A CENTRAL SHAFT ROTATABLY SUPPORTING AT LEAST THE INNERMOST ONE OF SAID CONDUITS, ROTATIONAL DRIVING MEANS CONNECTED TO SAID SHAFT, COOLING LIQUID CONDUIT MEANS IN TELESCOPIC RELATIONSHIP WITH THE INNER PORTION OF THE UPPER END OF SAID INNERMOST CONCENTRIC CONDUIT, COOLING LIQUID DISPERSION MEANS WITHIN THE TOP OF SAID INNERMOST CONCENTRIC CONDUIT PROVIDING A FALLING FILM OF COOLING LIQUID ON THE INNER SURFACE OF SAID INNERMOST CONDUIT, CIRCUMFERENTIAL PORTS ALONG THE BOTTOM PERIPHERY OF SAID INNERMOST CONCENTRIC CONDUIT, A SUPPORTING AND COOLING LIQUID DISPERSING MEANS ATTACHED TO THE LOWER PORTION OF SAID SHAFT AND IMPINGING IN SUPPORTING RELATIONSHIP ON THE BOTTOM PERIPHERY OF SAID INNERMOST CONDUIT, THE CONCENTRIC ARRANGEMENT OF THE INNERMOST CONDUIT AND THE SUR-
Claim 2
Dependent Claim
131 words
A FRACTIONATING COLUMN COMPRISING A PLURALITY OF CONCENTRICALLY SUPPORTED CONDUITS DEFINING A PLURALITY OF ANNULI, A CENTRAL SHAFT ROTATABLY SUPPORTING AT LEAST THE INNERMOST ONE OF SAID CONDUITS, ROTATIONAL DRIVING MEANS CONNECTED TO SAID SHAFT, COOLING LIQUID CONDUIT MEANS IN TELESCOPIC RELATIONSHIP WITH THE INNER PORTION OF THE UPPER END OF SAID INNERMOST CONCENTRIC CONDUIT, COOLING LIQUID DISPERSION MEANS WITHIN THE TOP OF SAID INNERMOST CONCENTRIC CONDUIT PROVIDING A FALLING FILM OF COOLING LIQUID ON THE INNER SURFACE OF SAID INNERMOST CONDUIT, CIRCUMFERENTIAL PORTS ALONG THE BOTTOM PERIPHERY OF SAID INNERMOST CONCENTRIC CONDUIT, A SUPPORTING AND COOLING LIQUID DISPERSING MEANS ATTACHED TO THE LOWER PORTION OF SAID SHAFT AND IMPINGING IN SUPPORTING RELATIONSHIP ON THE BOTTOM PERIPHERY OF SAID INNERMOST CONDUIT, THE CONCENTRIC ARRANGEMENT OF THE INNERMOST CONDUIT AND THE SUR-
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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) | 1955-10-07 | 1956-04-07 | 1956-10-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-10-07 | 1960-04-07 | 1960-10-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-10-07 | 1964-04-07 | 1964-10-07 | $7700.00 | Window Closed / Lapsed |