US3213831A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Vapor generating apparatus
Assignee: Combustion Engineering Inc
•
Filing: 1963-12-23
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Granted: 1965-10-26
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Expires: 1983-12-23
Abstract
No abstract record available.
Inventors
- 👤 Frank W Hochmuth
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 18:44
CPC Classifications
F; F22; F22B; F22B21/00; F22B21/34; F22B21/341; F22B21/343; F22B21/345; F22G; F22G1/00; F22G1/16; F23; F23G; F23G5/00; F23G5/44; F23G5/46
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
96 words
AN APPARATUS FOR GENERATING STEAM COMPRISING: A CHEMICAL RECOVERY UNIT HAVING A VAPOR GENERATING SECTION; AN AUXILIARY UNIT HAVING A VAPOR GENERATING SECTION AND BURNING A FUEL, THE COMBUSTION PRODUCTS OF WHICH HAVE LOW FOULING CHARACTERISTICS; THE VAPOR GENERATING SECTIONS OF THE CHEMICAL RECOVERY UNIT AND THE AUXILIARY UNIT BEING CONNECTED TIN PARALLEL TO DELIVER STEAM GENERATED THROUGH A COMMON CONDUIT; AN AIR HEATER RECEIVING AS ITS SOLE HEATING MEDIUM COMBUSTION PRODUCTS FROM THE AUXILIARY UNIT WHICH PASS THERETHROUGH; AND MEANS FOR CONVEYING PREHEATED COMBUSTION SUPPORTING AIR FROM THE AIR HEATER TO THE CHEMICAL RECOVERY UNIT.
Claim 2
Independent Claim
96 words
AN APPARATUS FOR GENERATING STEAM COMPRISING: A CHEMICAL RECOVERY UNIT HAVING A VAPOR GENERATING SECTION; AN AUXILIARY UNIT HAVING A VAPOR GENERATING SECTION AND BURNING A FUEL, THE COMBUSTION PRODUCTS OF WHICH HAVE LOW FOULING CHARACTERISTICS; THE VAPOR GENERATING SECTIONS OF THE CHEMICAL RECOVERY UNIT AND THE AUXILIARY UNIT BEING CONNECTED TIN PARALLEL TO DELIVER STEAM GENERATED THROUGH A COMMON CONDUIT; AN AIR HEATER RECEIVING AS ITS SOLE HEATING MEDIUM COMBUSTION PRODUCTS FROM THE AUXILIARY UNIT WHICH PASS THERETHROUGH; AND MEANS FOR CONVEYING PREHEATED COMBUSTION SUPPORTING AIR FROM THE AIR HEATER TO THE CHEMICAL RECOVERY UNIT.
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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) | 1968-10-25 | 1969-04-26 | 1969-10-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-10-25 | 1973-04-26 | 1973-10-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-10-25 | 1977-04-26 | 1977-10-26 | $7700.00 | Window Closed / Lapsed |