US3270807A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Heat exchanger having distribution tube internal flow directors
Assignee: Individual
•
Filing: 1964-05-01
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Granted: 1966-09-06
•
Expires: 1984-05-01
Abstract
No abstract record available.
Inventors
- 👤 Paul E Steadman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 18:13
CPC Classifications
F; F28; F28F; F28F9/00; F28F9/02; F28F9/026; F28F9/027; F28D; F28D7/00; F28D7/16; F28F21/00; F28F21/06; F28F21/067; F28F9/0229; Y; Y10; Y10S; Y10S165/00; Y10S165/454; Y10S165/471; Y10S165/483; Y10S165/484
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
70 words
IN A HEAT EXCHANGER, A SUPPLY HEADER AND A CONDENSATE HEADER ARRANGED IN SPACED RELATION, HEAT CONDUCTION TUBES EXTENDING BETWEEN SAID HEADERS, A HEADER PLATE IN SAID SUPPLY HEADER HAVING A SERIES OF OPENINGS ALIGNED WITH SAID HEAT CONDUCTION TUBES, SAID HEADER PLATE BEING ARRANGED IN SEALING ENGAGEMENT WITH SAID HEAT CONDUCTION TUBES, AND SYNTHETIC PLASTIC DISTRIBUTION TUBES EACH HAVING ONE END MOUNTED IN SAID OPENINGS AND PROVIDED WITH DIS-
Claim 2
Dependent Claim
70 words
IN A HEAT EXCHANGER, A SUPPLY HEADER AND A CONDENSATE HEADER ARRANGED IN SPACED RELATION, HEAT CONDUCTION TUBES EXTENDING BETWEEN SAID HEADERS, A HEADER PLATE IN SAID SUPPLY HEADER HAVING A SERIES OF OPENINGS ALIGNED WITH SAID HEAT CONDUCTION TUBES, SAID HEADER PLATE BEING ARRANGED IN SEALING ENGAGEMENT WITH SAID HEAT CONDUCTION TUBES, AND SYNTHETIC PLASTIC DISTRIBUTION TUBES EACH HAVING ONE END MOUNTED IN SAID OPENINGS AND PROVIDED WITH DIS-
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) | 1969-09-05 | 1970-03-07 | 1970-09-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-09-05 | 1974-03-07 | 1974-09-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-09-05 | 1978-03-07 | 1978-09-06 | $7700.00 | Window Closed / Lapsed |