Patent US3289743A successfully refreshed from Google Patents.
US3289743A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Isothermic heat exchangers
Assignee: Nikex Nehezipari Kulkereskedelmi Vallalat
•
Filing: 1964-06-15
•
Granted: 1966-12-06
•
Expires: 1984-06-15
Abstract
No abstract record available.
Inventors
- 👤 Biro Attila
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 08:29
CPC Classifications
F; F28; F28D; F28D15/00; F28D17/00; F28D17/02; F28F; F28F21/00; F28F21/08
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
130 words
IN A HEAT EXCHANGER CONTAINING A REGENERATION SECTION THROUGH WHICH A HOT FLUID MEDIUM AT A PREDETERMINED TEMPERATURE IS PASSED AND COOLED AND THROUGH WHICH A COLD FLUID MEDIA MAINTAINED AT A TEMPERATURE BELOW SAID PREDETERMINED TEMPERATURE IS PASSED AND HEATED TO SAID PREDETERMINED TEMPERATURE, SAID FLUID MEDIA BEING SELECTED FROM THE GROUP CONSISTING OF LIQUID AND GAS; THE IMPROVEMENT IN THAT SAID REGENERATION SECTION CONTAINS A PLURALITY OF LONGITUDINALLY DISPOSED SECTION CONTAINS A SAID COLD AND HOT FLUID MEDIA, THE FIRST ZONE WHICH CONTACTS THE HOT FLUID MEDIA CONTAINS A PLURALITY OF HOLLOW ELEMENTS FORMED FROM A HEAT RESISTANT MATERIAL HAVING ENCLOSED IN THEIR CAVITIES A FUSIBLE MATERIAL HAIVNG A MELTING POINT AT ABOUT SAID PREDETERMINED TEMPERATURE, EACH OF THE OTHER SAID ZONES HAVING A PLURALITY OF HOLLOW ELE-
Claim 2
Dependent Claim
130 words
IN A HEAT EXCHANGER CONTAINING A REGENERATION SECTION THROUGH WHICH A HOT FLUID MEDIUM AT A PREDETERMINED TEMPERATURE IS PASSED AND COOLED AND THROUGH WHICH A COLD FLUID MEDIA MAINTAINED AT A TEMPERATURE BELOW SAID PREDETERMINED TEMPERATURE IS PASSED AND HEATED TO SAID PREDETERMINED TEMPERATURE, SAID FLUID MEDIA BEING SELECTED FROM THE GROUP CONSISTING OF LIQUID AND GAS; THE IMPROVEMENT IN THAT SAID REGENERATION SECTION CONTAINS A PLURALITY OF LONGITUDINALLY DISPOSED SECTION CONTAINS A SAID COLD AND HOT FLUID MEDIA, THE FIRST ZONE WHICH CONTACTS THE HOT FLUID MEDIA CONTAINS A PLURALITY OF HOLLOW ELEMENTS FORMED FROM A HEAT RESISTANT MATERIAL HAVING ENCLOSED IN THEIR CAVITIES A FUSIBLE MATERIAL HAIVNG A MELTING POINT AT ABOUT SAID PREDETERMINED TEMPERATURE, EACH OF THE OTHER SAID ZONES HAVING A PLURALITY OF HOLLOW ELE-
References Cited (Backward Citations)
DE542637C
Cited
GB366528A
Cited
US2167901A
Cited
US2338691A
Cited
GB569396A
Cited
US2407095A
Cited
US2813698A
Cited
US2825034A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-12-05 | 1970-06-06 | 1970-12-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-12-05 | 1974-06-06 | 1974-12-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-12-05 | 1978-06-06 | 1978-12-06 | $7700.00 | Window Closed / Lapsed |