Patent US3144080A successfully refreshed from Google Patents.
US3144080A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Heat exchanger for the cooling of freshly cracked gases or the like
Assignee: Schmidtsche Heissdampf GmbH
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Filing: 1962-02-27
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Granted: 1964-08-11
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Expires: 1982-02-27
Abstract
No abstract record available.
Inventors
- 👤 Vollhardt Fromut
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 16:52
CPC Classifications
F; F28; F28D; F28D7/00; F28D7/10; F28D7/106; Y; Y10; Y10S; Y10S165/00; Y10S165/355; Y10S165/40; Y10S165/401; Y10S165/405; Y10S165/407; Y10S165/408
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
140 words
HEAT EXCHANGER PARTICULARLY FOR COOLING CRACKED GASES OR THE LIKE COMPRISING A GAS INPUT HEAD HAVING A GAS INLET PORT, A GAS DISCHARGE HEAD HAVING AN EXHAUST PORT, COOLING CHAMBERS LOCATED IN SAID HEADS IN STEPWISE ASCENDING RELATIONSHIP FROM THE OUTSIDE TOWARD THE CENTER, FILLING MEANS, SAID CHAMBERS BEING LOCATED IN CONJUNCTION WITH SAID FILLING MEANS TO FORM A BOTTOM WALL OF SAID GAS INPUT HEAD AND A TOP WALL OF SAID GAS DISCHARGE HEAD, COOLING PIPES EXTENDING BETWEEN SAID CHAMBERS IN SAID GAS INPUT HEAD AND SAID GAS DISCHARGE HEAD, FLUE PIPES LOCATED IN SAID COOLING PIPES EXTENDING THROUGH SAID CHAMBERS CONNECTING SAID GAS INPUT HEAD TO SAID GAS DISCHARGE HEAD, A GAS GUIDING HOOD LOCATED IN THE INTERIOR OF SAID GAS INPUT HEAD, SAID HOOD EXTENDING FROM SAID GAS INLET PORT OVER SAID FLUE PIPES TO THE LOWER-
Claim 2
Dependent Claim
140 words
HEAT EXCHANGER PARTICULARLY FOR COOLING CRACKED GASES OR THE LIKE COMPRISING A GAS INPUT HEAD HAVING A GAS INLET PORT, A GAS DISCHARGE HEAD HAVING AN EXHAUST PORT, COOLING CHAMBERS LOCATED IN SAID HEADS IN STEPWISE ASCENDING RELATIONSHIP FROM THE OUTSIDE TOWARD THE CENTER, FILLING MEANS, SAID CHAMBERS BEING LOCATED IN CONJUNCTION WITH SAID FILLING MEANS TO FORM A BOTTOM WALL OF SAID GAS INPUT HEAD AND A TOP WALL OF SAID GAS DISCHARGE HEAD, COOLING PIPES EXTENDING BETWEEN SAID CHAMBERS IN SAID GAS INPUT HEAD AND SAID GAS DISCHARGE HEAD, FLUE PIPES LOCATED IN SAID COOLING PIPES EXTENDING THROUGH SAID CHAMBERS CONNECTING SAID GAS INPUT HEAD TO SAID GAS DISCHARGE HEAD, A GAS GUIDING HOOD LOCATED IN THE INTERIOR OF SAID GAS INPUT HEAD, SAID HOOD EXTENDING FROM SAID GAS INLET PORT OVER SAID FLUE PIPES TO THE LOWER-
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) | 1967-08-11 | 1968-02-10 | 1968-08-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-08-11 | 1972-02-10 | 1972-08-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-08-11 | 1976-02-10 | 1976-08-11 | $7700.00 | Window Closed / Lapsed |