US3229758A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Heat exchanger
Assignee: Obipektin AG
•
Filing: 1963-03-18
•
Granted: 1966-01-18
•
Expires: 1983-03-18
Abstract
No abstract record available.
Inventors
- 👤 Pilnik Walter
- 👤 Wieser Werner
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 05:51
CPC Classifications
F; F25; F25D; F25D31/00; F25D31/002; A; A23; A23B; A23B11/00; A23B11/10; A23B11/12; A23B11/13; A23B11/133; A23B11/1336; A23B2/00; A23B2/40; A23B2/42; A23B2/80; A23B2/803; F28; F28D; F28D11/00; F28D11/02; F28F; F28F5/00; F28F5/02; Y; Y10; Y10S; Y10S165/00; Y10S165/135; Y10S165/139; Y10S165/152; Y10S165/153
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
120 words
A HEAT EXCHANGER COMPRISING A CYLINDRICAL CASING, SHAFT MEANS ROTATABLY SUPPORTED IN SAID CASING FOR ROTATION ABOUT THE AXIS THEREOF, A CYLINDRICAL DRUM CLOSED AT LEAST AT ONE OF ITS ENDS LOCATED WITHIN SAID CASING ROTATABLY SUPPORTED ON SAID SHAFT MEANS WITH ITS CENTRAL AXIS PARALLEL TO THE AXIS OF ROTATION OF SAID SHAFT MEANS AND SPACED THEREFROM, SAID CASING AND DRUM HAVING BETWEEN THEM A SPACE OF SUBSTANTIALLY CRESCENT-SHAPED CROSS-SECTION FOR THE FLUID TO BE TREATED BY HEAT EXCHANGE, SAID SPACE HAVING AN INLET AND AN OUTLET FOR SAID FLUID, AT LEAST ONE OF SAID CASING AND DRUM HAVING A DOUBLE CYLINDDRICAL WALL PROVIDING DUCT MEANS FOR THE CIRCULATION OF ANOTHER FLUID FOR EXCHANGING HEAT WITH SAID FIRST FLUID.
Claim 2
Dependent Claim
120 words
A HEAT EXCHANGER COMPRISING A CYLINDRICAL CASING, SHAFT MEANS ROTATABLY SUPPORTED IN SAID CASING FOR ROTATION ABOUT THE AXIS THEREOF, A CYLINDRICAL DRUM CLOSED AT LEAST AT ONE OF ITS ENDS LOCATED WITHIN SAID CASING ROTATABLY SUPPORTED ON SAID SHAFT MEANS WITH ITS CENTRAL AXIS PARALLEL TO THE AXIS OF ROTATION OF SAID SHAFT MEANS AND SPACED THEREFROM, SAID CASING AND DRUM HAVING BETWEEN THEM A SPACE OF SUBSTANTIALLY CRESCENT-SHAPED CROSS-SECTION FOR THE FLUID TO BE TREATED BY HEAT EXCHANGE, SAID SPACE HAVING AN INLET AND AN OUTLET FOR SAID FLUID, AT LEAST ONE OF SAID CASING AND DRUM HAVING A DOUBLE CYLINDDRICAL WALL PROVIDING DUCT MEANS FOR THE CIRCULATION OF ANOTHER FLUID FOR EXCHANGING HEAT WITH SAID FIRST FLUID.
References Cited (Backward Citations)
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Cited
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Cited
GB189523163A
Cited
US1494784A
Cited
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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) | 1969-01-17 | 1969-07-19 | 1970-01-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-01-17 | 1973-07-19 | 1974-01-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-01-17 | 1977-07-19 | 1978-01-18 | $7700.00 | Window Closed / Lapsed |