US3306352A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Compact coiled tube heat exchanger
Assignee: Individual
•
Filing: 1965-02-10
•
Granted: 1967-02-28
•
Expires: 1985-02-10
Abstract
No abstract record available.
Inventors
- 👤 Curren John Leo
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 12:00
CPC Classifications
F; F28; F28D; F28D7/00; F28D7/02; F28D7/024; Y; Y10; Y10S; Y10S165/00; Y10S165/355; Y10S165/40; Y10S165/401; Y10S165/405; Y10S165/406
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
123 words
A HEAT EXCHANGER COMPRISING: (A) A JACKET HAVING BULGED TOP AND BOTTOM SECTIONS, AND HAVING AN INLET AND OUTLET TO PERMIT PASSAGE OF A LIQUID THROUGH THE JACKET, (B) A PIPE ASSEMBLY VERTICALLY DISPOSED IN SAID JACKET, AND EXTENDING THROUGH THE TOP AND BOTTOM THEREOF, SAID ASSEMBLY HAVING AN UPPER SUPPLY CHAMBER HERMETICALLY SEALED FROM A LOWER RETURN CHAMBER, (C) A NEST OF TUBULAR COILS VERTICALLY DISPOSED IN SAID JACKET AND POSITIONED IN CLOSE PROXIMITY TO THE JACKET AND THE PIPE ASSEMBLY, THE UPPER END OF EACH COIL BEING CONNECTED TO THE SUPPLY CHAMBER OF SAID PIPE ASSEMBLY, AND THE LOWER END OF EACH COIL TO THE RETURN CHAMBER OF SAID PIPE ASSEMBLY, THE COMBINED CROSS SECTIONAL AREAS OF THE TUBES COMPRISING SAID
Claim 2
Dependent Claim
123 words
A HEAT EXCHANGER COMPRISING: (A) A JACKET HAVING BULGED TOP AND BOTTOM SECTIONS, AND HAVING AN INLET AND OUTLET TO PERMIT PASSAGE OF A LIQUID THROUGH THE JACKET, (B) A PIPE ASSEMBLY VERTICALLY DISPOSED IN SAID JACKET, AND EXTENDING THROUGH THE TOP AND BOTTOM THEREOF, SAID ASSEMBLY HAVING AN UPPER SUPPLY CHAMBER HERMETICALLY SEALED FROM A LOWER RETURN CHAMBER, (C) A NEST OF TUBULAR COILS VERTICALLY DISPOSED IN SAID JACKET AND POSITIONED IN CLOSE PROXIMITY TO THE JACKET AND THE PIPE ASSEMBLY, THE UPPER END OF EACH COIL BEING CONNECTED TO THE SUPPLY CHAMBER OF SAID PIPE ASSEMBLY, AND THE LOWER END OF EACH COIL TO THE RETURN CHAMBER OF SAID PIPE ASSEMBLY, THE COMBINED CROSS SECTIONAL AREAS OF THE TUBES COMPRISING SAID
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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) | 1970-02-27 | 1970-08-29 | 1971-02-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-02-27 | 1974-08-29 | 1975-02-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-02-27 | 1978-08-29 | 1979-02-28 | $7700.00 | Window Closed / Lapsed |