US2640761A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Evaporating apparatus
Assignee: West End Chemical Co
•
Filing: 1949-11-25
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Granted: 1953-06-02
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Expires: 1969-11-25
Abstract
No abstract record available.
Inventors
- 👤 James V Wiseman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 19:32
CPC Classifications
C; C01; C01D; C01D5/00; C01D5/18; B; B01; B01D; B01D1/00; B01D1/14; B01D1/16; B01D1/22; B01D9/00; B01D9/0018; B01D9/0031; B01D9/0036; B01D9/0059; Y; Y10; Y10S; Y10S159/00; Y10S159/25
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
182 words
CONCENTRATING APPARATUS COMPRISING A VERTICAL TUBULAR METAL SHELL HAVING AN UPPER END AND A LOWER END, A PIPE HAVING AN UPPER AND A LOWER END AND DEPENDING CONCENTRICALLY IN SAID TUBULAR METAL SHELL IN A SPACED RELATION TO EACH END OF SAID SHELL TO PROVIDE A GAS SPACE THEREBETWEEN, AN INVERTED TRUNCATED CONE HAVING ITS UPPER END JOINED TO THE UPPER END OF SAID SHELL AND ITS LOWER END JOINED TO THE UPPER END OF SAID PIPE TO PROVIDE A CLOSURE BETWEEN SAID SHELL AND SAID PIPE, MEANS FOR DISCHARGING A HOT DRY GAS INTO SAID CONE AT THE UPPER END OF SAID TUBULAR METAL SHELL, MEANS FOR DISCHARGING A LIQUID TO BE EVAPORATED ONTO THE UPPER SURFACE OF SAID CONE TO MAINTAIN SAID CONE AND SAID PIPE COMPLETELY COVERED WITH A LIQUID FILM, MEANS FOR SPRAYING ADDITIONAL LIQUID INTO THE GAS SPACE BETWEEN THE SHELL AND THE PIPE, MEANS FOR COLLECTING AND WITHDRAWING CONCENTRATED LIQUID AT THE BOTTOM OF THE SHELL, AND MEANS FOR WITHDRAWING RELATIVELY COLD WET GAS FROM BETWEEN THE PIPE AND SHELL ADJACENT THE UNDERSIDE OF SAID CONE.
Claim 2
Dependent Claim
182 words
CONCENTRATING APPARATUS COMPRISING A VERTICAL TUBULAR METAL SHELL HAVING AN UPPER END AND A LOWER END, A PIPE HAVING AN UPPER AND A LOWER END AND DEPENDING CONCENTRICALLY IN SAID TUBULAR METAL SHELL IN A SPACED RELATION TO EACH END OF SAID SHELL TO PROVIDE A GAS SPACE THEREBETWEEN, AN INVERTED TRUNCATED CONE HAVING ITS UPPER END JOINED TO THE UPPER END OF SAID SHELL AND ITS LOWER END JOINED TO THE UPPER END OF SAID PIPE TO PROVIDE A CLOSURE BETWEEN SAID SHELL AND SAID PIPE, MEANS FOR DISCHARGING A HOT DRY GAS INTO SAID CONE AT THE UPPER END OF SAID TUBULAR METAL SHELL, MEANS FOR DISCHARGING A LIQUID TO BE EVAPORATED ONTO THE UPPER SURFACE OF SAID CONE TO MAINTAIN SAID CONE AND SAID PIPE COMPLETELY COVERED WITH A LIQUID FILM, MEANS FOR SPRAYING ADDITIONAL LIQUID INTO THE GAS SPACE BETWEEN THE SHELL AND THE PIPE, MEANS FOR COLLECTING AND WITHDRAWING CONCENTRATED LIQUID AT THE BOTTOM OF THE SHELL, AND MEANS FOR WITHDRAWING RELATIVELY COLD WET GAS FROM BETWEEN THE PIPE AND SHELL ADJACENT THE UNDERSIDE OF SAID CONE.
References Cited (Backward Citations)
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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) | 1956-06-01 | 1956-12-01 | 1957-06-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-06-01 | 1960-12-01 | 1961-06-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-06-01 | 1964-12-01 | 1965-06-02 | $7700.00 | Window Closed / Lapsed |