Patent US3256932A successfully refreshed from Google Patents.
US3256932A
Expired / Lapsed
US
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Heat exchanger tube arrangement
Assignee: Babcock and Wilcox Co
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Filing: 1963-01-03
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Granted: 1966-06-21
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Expires: 1983-01-03
Abstract
No abstract record available.
Inventors
- 👤 Schlichting John
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 06:04
CPC Classifications
F; F22; F22B; F22B1/00; F22B1/02; F22B1/06; F22B1/063; F28; F28D; F28D7/00; F28D7/02; F28D7/024; Y; Y10; Y10S; Y10S165/00; Y10S165/355; Y10S165/40; Y10S165/401; Y10S165/405; Y10S165/414
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
142 words
A TUBE ARRANGEMENT FOR A HEAT EXCHANGE DEVICE COMPRISING: A. A CONTAINER, B. A BUNDLE FOR HELICALLY COILED TUBES DISPOSED WITHIN SAID CONTAINER, C. SAID BUNDLE COMPRISING A NUMBER OF CONCENTRICALLY ARRANGED CIRCULAR ROWS OF TUBES, D. EACH OF SAID HELICALLY COILED TUBES BEING POSITIONED WITHIN A SINGLE CIRCULAR ROW THROUGHOUT ITS LENGTH WITHIN THE BUNDLE, E. THE PITCH OF EACH OF SAID TUBES WITHIN SAID BUNDLE BEING SUBSTANTIALLY EQUAL, F. THE LEAD OF EACH TUBE IN A SINGLE CIRCULAR ROW BEING EQUAL AND THE LEAD OF TUBES IN DFFERENT CIRCULAR ROWS VARYING IN DIRECT PROPORTION TO THE DIAMETER OF THE CIRCULAR ROWS, G. THE ANGLE OF LEAD FOR EACH OF SAID TUBES IN SAID BUNDLE BEING SUBSTANTIALLY EQUAL, AND H. THE NUMBER OF TUBES PER CIRCULAR ROW INCREASING IN GENERAL RELATION TO THE DISTANCE FROM THE AXIAL CENTER OF THE BUNDLE.
Claim 2
Dependent Claim
142 words
A TUBE ARRANGEMENT FOR A HEAT EXCHANGE DEVICE COMPRISING: A. A CONTAINER, B. A BUNDLE FOR HELICALLY COILED TUBES DISPOSED WITHIN SAID CONTAINER, C. SAID BUNDLE COMPRISING A NUMBER OF CONCENTRICALLY ARRANGED CIRCULAR ROWS OF TUBES, D. EACH OF SAID HELICALLY COILED TUBES BEING POSITIONED WITHIN A SINGLE CIRCULAR ROW THROUGHOUT ITS LENGTH WITHIN THE BUNDLE, E. THE PITCH OF EACH OF SAID TUBES WITHIN SAID BUNDLE BEING SUBSTANTIALLY EQUAL, F. THE LEAD OF EACH TUBE IN A SINGLE CIRCULAR ROW BEING EQUAL AND THE LEAD OF TUBES IN DFFERENT CIRCULAR ROWS VARYING IN DIRECT PROPORTION TO THE DIAMETER OF THE CIRCULAR ROWS, G. THE ANGLE OF LEAD FOR EACH OF SAID TUBES IN SAID BUNDLE BEING SUBSTANTIALLY EQUAL, AND H. THE NUMBER OF TUBES PER CIRCULAR ROW INCREASING IN GENERAL RELATION TO THE DISTANCE FROM THE AXIAL CENTER OF THE BUNDLE.
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) | 1969-06-20 | 1969-12-20 | 1970-06-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-06-20 | 1973-12-20 | 1974-06-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-06-20 | 1977-12-20 | 1978-06-21 | $7700.00 | Window Closed / Lapsed |