US3186830A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Melting process
Assignee: Individual
•
Filing: 1963-05-20
•
Granted: 1965-06-01
•
Expires: 1983-05-20
Abstract
No abstract record available.
Inventors
- 👤 William H Moore
- 👤 Harry H Kessler
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 06:54
CPC Classifications
C; C21; C21B; C21B13/00; C21B13/0006; C21B13/0013; C21B13/002; Y; Y10; Y10S; Y10S266/00; Y10S266/90
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
187 words
THE METHOD OF CONTINUOUSLY PRODUCING CAST IRON IN A SUBSTANTIALLY VERTICAL SHAFT FURNACE HAVING TUYERES AT THE UPPER END PORTION AND A CONDUIT AT THE LOWER END PORTION LEADING TO A METAL RECEIVER COMPRISING THE STEPS OF INTRODUCING A BED OF SOLID LUMP FUEL TO OCCUPY THE LOWER PORTION OF THE SHAFT FURNACE BELOW SAID TUYERES INTRODUCING AIR FOR COMBUSTION AT SAID TUYERES, INTRODUCING A SERIES OF METAL-SOLID LUMP FUEL CHARGES AT SAID UPPER END PORTION OF THE SHAFT FURNACE, IGNITING SAID SOLID LUMP FUEL AT AN UPPER PORTION OF THE SHAFT FURNACE AND SAID AIR AND SAID SOLID LUMP FUEL PRODUCING A COMBUSTION ZONE AT AND BELOW SAID TUYERES WHICH PRODUCES HOT GASES SUBTANTIALLY ALL OF WHICH PASS DOWNWARD THROUGH THE SHAFT FURNACE, SAID COMBUSTION ZONES BEING RICH IN OXYGEN TO PRODUCE AN OXIDIZING ZONE AND SAID DOWNWARD FLOW OF GASES PRODUCING A REDUCING ZONE CONTAINING SUBSTANTIALLY NO FREE OXYGEN AT A POINT IN THE SHAFT FURNACE BELOW SAID COMBUSTION ZONE, SAID METAL CHARGE MELTING IN SAID OXIDIZING ZONE AND THEREAFTER FALLING THROUGH SAID REDUCING ZONE AND THEN PASSING THROUGH SAID CONDUIT INTO SAID METAL RECEIVER.
Claim 2
Independent Claim
187 words
THE METHOD OF CONTINUOUSLY PRODUCING CAST IRON IN A SUBSTANTIALLY VERTICAL SHAFT FURNACE HAVING TUYERES AT THE UPPER END PORTION AND A CONDUIT AT THE LOWER END PORTION LEADING TO A METAL RECEIVER COMPRISING THE STEPS OF INTRODUCING A BED OF SOLID LUMP FUEL TO OCCUPY THE LOWER PORTION OF THE SHAFT FURNACE BELOW SAID TUYERES INTRODUCING AIR FOR COMBUSTION AT SAID TUYERES, INTRODUCING A SERIES OF METAL-SOLID LUMP FUEL CHARGES AT SAID UPPER END PORTION OF THE SHAFT FURNACE, IGNITING SAID SOLID LUMP FUEL AT AN UPPER PORTION OF THE SHAFT FURNACE AND SAID AIR AND SAID SOLID LUMP FUEL PRODUCING A COMBUSTION ZONE AT AND BELOW SAID TUYERES WHICH PRODUCES HOT GASES SUBTANTIALLY ALL OF WHICH PASS DOWNWARD THROUGH THE SHAFT FURNACE, SAID COMBUSTION ZONES BEING RICH IN OXYGEN TO PRODUCE AN OXIDIZING ZONE AND SAID DOWNWARD FLOW OF GASES PRODUCING A REDUCING ZONE CONTAINING SUBSTANTIALLY NO FREE OXYGEN AT A POINT IN THE SHAFT FURNACE BELOW SAID COMBUSTION ZONE, SAID METAL CHARGE MELTING IN SAID OXIDIZING ZONE AND THEREAFTER FALLING THROUGH SAID REDUCING ZONE AND THEN PASSING THROUGH SAID CONDUIT INTO SAID METAL RECEIVER.
References Cited (Backward Citations)
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US1751185A
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US2618548A
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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) | 1968-05-31 | 1968-11-30 | 1969-06-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-05-31 | 1972-11-30 | 1973-06-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-05-31 | 1976-11-30 | 1977-06-01 | $7700.00 | Window Closed / Lapsed |