US2799491A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Furnace for production of controlled furnace atmosphere with recuperative preheating
Assignee: Metallurgical Processes Co
•
Filing: 1954-12-17
•
Granted: 1957-07-16
•
Expires: 1974-12-17
Abstract
No abstract record available.
Inventors
- 👤 Frank A Rusciano
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 21:06
CPC Classifications
C; C21; C21D; C21D1/00; C21D1/74
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
124 words
A FURNACE FOR THE HEATING OF METAL COMPRISING A WORK HEATING CHAMBER HAVING A PREHEATING SECTION AND A FINAL HEATING SECTION, MEANS FOR SUPPLYING TO SAID FINAL HEATING SECTION THE HOT PRIMARY PRODUCTS OF COMBUSTION OF A MIXTURE OF FUEL AND AIR HAVING A LARGE DEFICIENCY OF AIR FOR COMPLETE COMBUSTION, A COMBUTION CHAMBER DISPOSED IN DIRECT HEAT TRANSFER RELATION TO SAID FINAL HEATING SECTION, MEANS FOR VENTING AT LEAST A PORTION OF SAID PRIMARY COMBUSTION PRODUCTS FROM SAID FINAL HEATING SECTION INTO SAID COMBUSTION CHAMBER, MEANS FOR ADDING ADDI TIONAL AIR TO SAID VENTED PRODUCTS WHEREBY TO PRODUCE SECONDARY COMBUSTION THEREOF IN SAID COMBUSTION CHAM-BER AND MEANS FOR PASSING THE PRODUCTS OF SAID SECONDARY COMBUSTION IN HEAT TRANSFER RELATION TO SAID PREHEATING SECTION.
Claim 2
Dependent Claim
124 words
A FURNACE FOR THE HEATING OF METAL COMPRISING A WORK HEATING CHAMBER HAVING A PREHEATING SECTION AND A FINAL HEATING SECTION, MEANS FOR SUPPLYING TO SAID FINAL HEATING SECTION THE HOT PRIMARY PRODUCTS OF COMBUSTION OF A MIXTURE OF FUEL AND AIR HAVING A LARGE DEFICIENCY OF AIR FOR COMPLETE COMBUSTION, A COMBUTION CHAMBER DISPOSED IN DIRECT HEAT TRANSFER RELATION TO SAID FINAL HEATING SECTION, MEANS FOR VENTING AT LEAST A PORTION OF SAID PRIMARY COMBUSTION PRODUCTS FROM SAID FINAL HEATING SECTION INTO SAID COMBUSTION CHAMBER, MEANS FOR ADDING ADDI TIONAL AIR TO SAID VENTED PRODUCTS WHEREBY TO PRODUCE SECONDARY COMBUSTION THEREOF IN SAID COMBUSTION CHAM-BER AND MEANS FOR PASSING THE PRODUCTS OF SAID SECONDARY COMBUSTION IN HEAT TRANSFER RELATION TO SAID PREHEATING SECTION.
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) | 1960-07-15 | 1961-01-14 | 1961-07-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-07-15 | 1965-01-14 | 1965-07-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-07-15 | 1969-01-14 | 1969-07-16 | $7700.00 | Window Closed / Lapsed |