US3282797A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Thin film liquid evaporator formed of a thin corrugated sheet-like member
Assignee: Westinghouse Electric Corp
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Filing: 1962-05-25
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Granted: 1966-11-01
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Expires: 1982-05-25
Abstract
No abstract record available.
Inventors
- 👤 Joel B Hammer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 03:12
CPC Classifications
B; B01; B01D; B01D1/00; B01D1/22; Y; Y10; Y10S; Y10S203/00; Y10S203/18
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
130 words
A LIQUID EVAPORATOR STRUCTURE FORMED OF A THIN CORREGULATED SHEET-LIKE MEMBER EXTENDING DOWNWARDLY AND MEANS UTILIZING SURFACE TENSION CHARACTERISTICS OF A LIQUID FOR SPREADING THE LIQUID OVER SAID MEMBER IN A THIN FILM COMPRISING DOWNWARDLY EXTENDING RIDGES PROVIDED ON SAID MEMBER HAVING A PREDETERMINED HEIGHT, EACH OF SAID RIDGES HAVING A CENTRALLY DISPOSED DOWNWARDLY EXTENDING LIQUID DISTRIBUTING GROOVE AND HAVING A PAIR OF CONVEX SURFACES EXTENDING IN OPPOSITE DIRECTIONS AWAY FROM SAID GROOVE, SAID GROOVE HAVING A DEPTH SUBSTANTIALLY LESS THAN THE HEIGHT OF SAID RIDGES, WHEREBY AS LIQUID FLOWS THROUGH SAID GROOVE BY GRAVITATION, THE SURFACE TENSION OF SAID LIQUID ESTABLISHES A PRESSURE GRADIENT ACROSS SAID CONVEX SURFACES THAT DRIVES THE LIQUID IN OPPOSITE DIRECTIONS FROM SAID GROOVE AND ACROSS SAID CONVEX SURFACES TO FORM A THIN LIQUID FILM.
Claim 2
Dependent Claim
130 words
A LIQUID EVAPORATOR STRUCTURE FORMED OF A THIN CORREGULATED SHEET-LIKE MEMBER EXTENDING DOWNWARDLY AND MEANS UTILIZING SURFACE TENSION CHARACTERISTICS OF A LIQUID FOR SPREADING THE LIQUID OVER SAID MEMBER IN A THIN FILM COMPRISING DOWNWARDLY EXTENDING RIDGES PROVIDED ON SAID MEMBER HAVING A PREDETERMINED HEIGHT, EACH OF SAID RIDGES HAVING A CENTRALLY DISPOSED DOWNWARDLY EXTENDING LIQUID DISTRIBUTING GROOVE AND HAVING A PAIR OF CONVEX SURFACES EXTENDING IN OPPOSITE DIRECTIONS AWAY FROM SAID GROOVE, SAID GROOVE HAVING A DEPTH SUBSTANTIALLY LESS THAN THE HEIGHT OF SAID RIDGES, WHEREBY AS LIQUID FLOWS THROUGH SAID GROOVE BY GRAVITATION, THE SURFACE TENSION OF SAID LIQUID ESTABLISHES A PRESSURE GRADIENT ACROSS SAID CONVEX SURFACES THAT DRIVES THE LIQUID IN OPPOSITE DIRECTIONS FROM SAID GROOVE AND ACROSS SAID CONVEX SURFACES TO FORM A THIN LIQUID FILM.
References Cited (Backward Citations)
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Cited
US1359276A
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US2445471A
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US2642897A
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US3192133A
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US3099607A
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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) | 1969-10-31 | 1970-05-02 | 1970-11-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-10-31 | 1974-05-02 | 1974-11-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-10-31 | 1978-05-02 | 1978-11-01 | $7700.00 | Window Closed / Lapsed |