Patent US2662850A successfully refreshed from Google Patents.
US2662850A
Expired / Lapsed
US
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Condensing system for distillation column
Assignee: Lummus Technology LLC
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Filing: 1950-09-07
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Granted: 1953-12-15
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Expires: 1970-09-07
Abstract
No abstract record available.
Inventors
- 👤 Wheaton W Kraft
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 20:12
CPC Classifications
B; B01; B01D; B01D5/00; B01D5/0057; B01D5/006; B01D5/0063; B01D5/0003; B01D5/0009; B01D5/0033; B01D5/0036
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
146 words
IN A DISTILLATION COLUMN, CONDENSING APPARATUS COMPRISING A CHAMBER WITHIN AN UPPER PORTION OF THE COLUMN AND HAVING OPPOSITE SIDE WALLS INWARDLY SPACED FROM OPPOSITE SIDES OF THE COLUMN TO AFFORD FREE PASSAGES FOR ASCENDING VAPORS AT OPPOSITE SIDES OF THE CHAMBER, SAID CHAMBER BEING OPEN AT THE UPPER PORTION ONLY THEREOF FOR ADMISSION OF VAPORS FROM BOTH OF SAID PASSAGES, A VAPOR OFFTAKE CONDUIT LEADING FROM A LOWER PORTION OF THE CHAMBER TO THE EXTERIOR OF THE COLUMN, FIRST-STAGE CONDENSER TUBING WITHIN THE CHAMBER AND IN THE PATH OF DESCENT OF THE ADMITTED VAPORS, MEANS TO CIRCULATE COOLING FLUID THROUGH SAID TUBING, MEANS FORMING A FIRST-STAGE CONDENSATE-COLLECTING WELL WITHIN THE CHAMBER, A DRAIN CONDUIT LEADING FROM SAID WELL TO THE EXTERIOR OF THE CHAMBER, SECONDSTAGE CONDENSER TUBING WITHIN THE CHAMBER AND SPACED BELOW SAID FIRST-STAGE TUBING, MEANS TO CIRCULATE A COOLING FLUID THROUGH SAID SECOND-
Claim 2
Dependent Claim
146 words
IN A DISTILLATION COLUMN, CONDENSING APPARATUS COMPRISING A CHAMBER WITHIN AN UPPER PORTION OF THE COLUMN AND HAVING OPPOSITE SIDE WALLS INWARDLY SPACED FROM OPPOSITE SIDES OF THE COLUMN TO AFFORD FREE PASSAGES FOR ASCENDING VAPORS AT OPPOSITE SIDES OF THE CHAMBER, SAID CHAMBER BEING OPEN AT THE UPPER PORTION ONLY THEREOF FOR ADMISSION OF VAPORS FROM BOTH OF SAID PASSAGES, A VAPOR OFFTAKE CONDUIT LEADING FROM A LOWER PORTION OF THE CHAMBER TO THE EXTERIOR OF THE COLUMN, FIRST-STAGE CONDENSER TUBING WITHIN THE CHAMBER AND IN THE PATH OF DESCENT OF THE ADMITTED VAPORS, MEANS TO CIRCULATE COOLING FLUID THROUGH SAID TUBING, MEANS FORMING A FIRST-STAGE CONDENSATE-COLLECTING WELL WITHIN THE CHAMBER, A DRAIN CONDUIT LEADING FROM SAID WELL TO THE EXTERIOR OF THE CHAMBER, SECONDSTAGE CONDENSER TUBING WITHIN THE CHAMBER AND SPACED BELOW SAID FIRST-STAGE TUBING, MEANS TO CIRCULATE A COOLING FLUID THROUGH SAID SECOND-
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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) | 1956-12-14 | 1957-06-15 | 1957-12-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-12-14 | 1961-06-15 | 1961-12-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-12-14 | 1965-06-15 | 1965-12-15 | $7700.00 | Window Closed / Lapsed |