US2614973A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Short path fractionating stills
Assignee: Metropolitan Vickers Electrical Co Ltd
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Filing: 1948-12-10
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Granted: 1952-10-21
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Expires: 1968-12-10
Abstract
No abstract record available.
Inventors
- 👤 Burrows Godfrey
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 11:40
CPC Classifications
B; B01; B01D; B01D3/00; B01D3/08; B01D3/12
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
109 words
A SHORT PATH FRACTIONATING STILL, COMPRISING AN EVAPORATING PAN HAVING A SERIES OF CONCENTRIC CHANNELS ARRANGED IN STEP-LIKE FORMATION, A PLURALITY OF RADIAL BARRIERS DIVIDING EACH OF SAID CHANNELS INTO A PARTIALLY OF ARCUATE-SHAPED CELLS THE CELLS IN ADJACENT CHANNELS BEING PROVIDED WITH OVERFLOW OUTLETS WHICH ARE RELATIVELY STAGGERED CIRCUMFERENTIALLY OF THE CHANNELS, AND A CONDENSER HAVING A SERIES OF INCLINED CONCENTRIC CONDENSING SURFACES POSITIONED ONE OVER EACH CHANNEL OF THE EVAPORATING PAN AND EACH HAVING DISCHARGE MEANS SO CONSTRUCTED AS TO DELIVER CONDENSATE FROM THE CELLS OF ONE CHANNEL TO RESPECTIVE INDIVIDUAL CELLS OF THE NEXT HIGHER CHANNEL ONLY AT POINTS REMOTE FROM THE OUTLETS OF SAID CELLS.
Claim 2
Dependent Claim
109 words
A SHORT PATH FRACTIONATING STILL, COMPRISING AN EVAPORATING PAN HAVING A SERIES OF CONCENTRIC CHANNELS ARRANGED IN STEP-LIKE FORMATION, A PLURALITY OF RADIAL BARRIERS DIVIDING EACH OF SAID CHANNELS INTO A PARTIALLY OF ARCUATE-SHAPED CELLS THE CELLS IN ADJACENT CHANNELS BEING PROVIDED WITH OVERFLOW OUTLETS WHICH ARE RELATIVELY STAGGERED CIRCUMFERENTIALLY OF THE CHANNELS, AND A CONDENSER HAVING A SERIES OF INCLINED CONCENTRIC CONDENSING SURFACES POSITIONED ONE OVER EACH CHANNEL OF THE EVAPORATING PAN AND EACH HAVING DISCHARGE MEANS SO CONSTRUCTED AS TO DELIVER CONDENSATE FROM THE CELLS OF ONE CHANNEL TO RESPECTIVE INDIVIDUAL CELLS OF THE NEXT HIGHER CHANNEL ONLY AT POINTS REMOTE FROM THE OUTLETS OF SAID CELLS.
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) | 1955-10-21 | 1956-04-21 | 1956-10-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-10-21 | 1960-04-21 | 1960-10-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-10-21 | 1964-04-21 | 1964-10-21 | $7700.00 | Window Closed / Lapsed |