US3292599A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Multichambered fired heater and tube wall construction
Assignee: WASTE HEAT ENGINEERING CORP
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Filing: 1964-12-14
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Granted: 1966-12-20
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Expires: 1984-12-14
Abstract
No abstract record available.
Inventors
- 👤 Merle A Zimmerman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 15:23
CPC Classifications
C; C10; C10G; C10G9/00; C10G9/14; C10G9/18; C10G9/20
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
73 words
A TUBE WALL PARITITION FOR A MULTICHAMBERED FIRED HEATER COMPRISING: (A) A PLURALITY OF HOLLOW TUBES HAVING THEIR AXES LYING SUBSTANTIALLY IN A COMMON PLANE; (B) UNITARY METALLIC FINS EXTENDING OUTWARDLY FROM SAID TUBES; (C) MEANS INTERCONNECTING ADJACENT TUBES TOGETHER BY SAID FINS TO FORM A SUBSTANTIALLY VERTICAL WALL; (D) REFRACTORY MATERIAL SECURED ON EACH SIDE OF SAID FINS BETWEEN SAID TUBES TO INHIBIT OVERHEATING OF SAID TUBES WHERE JOINED WITH SAID FINS;
Claim 2
Dependent Claim
73 words
A TUBE WALL PARITITION FOR A MULTICHAMBERED FIRED HEATER COMPRISING: (A) A PLURALITY OF HOLLOW TUBES HAVING THEIR AXES LYING SUBSTANTIALLY IN A COMMON PLANE; (B) UNITARY METALLIC FINS EXTENDING OUTWARDLY FROM SAID TUBES; (C) MEANS INTERCONNECTING ADJACENT TUBES TOGETHER BY SAID FINS TO FORM A SUBSTANTIALLY VERTICAL WALL; (D) REFRACTORY MATERIAL SECURED ON EACH SIDE OF SAID FINS BETWEEN SAID TUBES TO INHIBIT OVERHEATING OF SAID TUBES WHERE JOINED WITH SAID FINS;
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) | 1969-12-19 | 1970-06-20 | 1970-12-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-12-19 | 1974-06-20 | 1974-12-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-12-19 | 1978-06-20 | 1978-12-20 | $7700.00 | Window Closed / Lapsed |