US3273630A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Falling film evaporator for concentrating alkaline liquors
Assignee: Hch Bertrams AG
•
Filing: 1963-08-19
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Granted: 1966-09-20
•
Expires: 1983-08-19
Abstract
No abstract record available.
Inventors
- 👤 Kuhnlein Hans
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 22:20
CPC Classifications
C; C01; C01D; C01D1/00; C01D1/04; C01D1/42; B; B01; B01D; B01D1/00; B01D1/06; B01D1/065; B01D1/10; B01D3/00; B01D3/14; B01D3/26; B01D3/28; B01J; B01J10/00; B01J10/02; Y; Y10; Y10S; Y10S159/00; Y10S159/34
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
149 words
APPARATUS FOR CONCENTRATING ALKALINE LIQUOR, WHICH COMPRISES AT LEAST ONE UPRIGHT TUBE, MEANS FOR INTRODUCING ALKALINE LIQUOR NEAR THE TOP OF SAID TUBE FOR FORMING A CONTINUOUS LIQUOR FILM DESCENDING ALONG THE INTERIOR WALL OF SAID TUBE, HEATING MEANS FOR HEATING THE EXTERIOR WALL OF SAID TUBE, MEANS FOR WITHDRAWING CONCENTRATED LIQUOR FROM THE LOWER END OF SAID TUBE AND MECHANICAL OBSTRUCTING MEANS ARRANGED WITHIN THE INTERIOR OF SAID TUBE AND SPACED FROM SAID FILM FOR OBSTRUCTING LIQUOR PARTICLES ENTERING THE SPACE DEFINED BY SAID LIQUOR FILM AND FOR CONDUCTING SAID PARTICLES BACK TO SAID FILM, SAID OBSTRUCTING MEANS COMPRISING AT LEAST ONE SCREW MEMBER MOUNTED ON ROD MEANS EXTENDING WITHIN SAID TUBE, SAID SCREW MEMBER HAVING A SLANTED SURFACE, THE PITCH OF SAID SCREW MEMBER BEING ABOUT 150MM. WHILE THE INCLINATION OF THE SLANTED SURFACE OF THE SCREW IS ABOUT 20* RELATIVE TO THE AXIS OF THE TUBE.
Claim 2
Dependent Claim
149 words
APPARATUS FOR CONCENTRATING ALKALINE LIQUOR, WHICH COMPRISES AT LEAST ONE UPRIGHT TUBE, MEANS FOR INTRODUCING ALKALINE LIQUOR NEAR THE TOP OF SAID TUBE FOR FORMING A CONTINUOUS LIQUOR FILM DESCENDING ALONG THE INTERIOR WALL OF SAID TUBE, HEATING MEANS FOR HEATING THE EXTERIOR WALL OF SAID TUBE, MEANS FOR WITHDRAWING CONCENTRATED LIQUOR FROM THE LOWER END OF SAID TUBE AND MECHANICAL OBSTRUCTING MEANS ARRANGED WITHIN THE INTERIOR OF SAID TUBE AND SPACED FROM SAID FILM FOR OBSTRUCTING LIQUOR PARTICLES ENTERING THE SPACE DEFINED BY SAID LIQUOR FILM AND FOR CONDUCTING SAID PARTICLES BACK TO SAID FILM, SAID OBSTRUCTING MEANS COMPRISING AT LEAST ONE SCREW MEMBER MOUNTED ON ROD MEANS EXTENDING WITHIN SAID TUBE, SAID SCREW MEMBER HAVING A SLANTED SURFACE, THE PITCH OF SAID SCREW MEMBER BEING ABOUT 150MM. WHILE THE INCLINATION OF THE SLANTED SURFACE OF THE SCREW IS ABOUT 20* RELATIVE TO THE AXIS OF THE TUBE.
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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) | 1969-09-19 | 1970-03-21 | 1970-09-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-09-19 | 1974-03-21 | 1974-09-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-09-19 | 1978-03-21 | 1978-09-20 | $7700.00 | Window Closed / Lapsed |