US2554609A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of operating open-hearth furnaces
Assignee: American Steel and Wire Company of New Jersey
•
Filing: 1948-01-10
•
Granted: 1951-05-29
•
Expires: 1968-01-10
Abstract
No abstract record available.
Inventors
- 👤 Fred H Barnes
- 👤 Stewart F Oakes
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 18:25
CPC Classifications
C; C21; C21C; C21C5/00; C21C5/04
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
146 words
IN THE METHOD OF MAKING STEEL IN THE MELTING CHAMBER OF AN OPEN HEARTH FURNACE WHICH INCLUDES THE STEP OF CHARGING METAL SCRAP INTO THE FURNACE, THE IMPROVEMENT IN THE MELTING STEP THEREOF COMPRISING PROJECTING A STREAM OF LIQUID FUEL FROM A BURNER INTO ONE END OF AND LONGITUDINALLY OF SAID CHAMBER, SAID STREAM BEING DIRECTED DOWNWARDLY AT AN ANGLE TO IMPINGE ON SAID CHARGE, INTRODUCING A STREAM OF COMPRESSED AIR METAL RINGS HAVING THEIR ENDS JOINED TOGETHER, THE OUTER OF SAID RINGS BEING SUBSTANTIALLY IN THE SHAPE OF THE SURFACE OF A SPHERICAL ZONE AND THE INNER OF SAID RINGS COMPRISING A BELLED ANNULUS, EACH OF SAID RINGS HAVING A PLURALITY OF SMALL OPENINGS THERETHROUGH, A PLURALITY OF NUTS MOUNTED ON THE INNER SURFACE OF EACH OF SAID RINGS WITH EACH OF SAID NUTS SURROUNDING ONE OF SAID OPENINGS, MEANS FOR SUPPORTING SAID COWL COM-
Claim 2
Dependent Claim
146 words
IN THE METHOD OF MAKING STEEL IN THE MELTING CHAMBER OF AN OPEN HEARTH FURNACE WHICH INCLUDES THE STEP OF CHARGING METAL SCRAP INTO THE FURNACE, THE IMPROVEMENT IN THE MELTING STEP THEREOF COMPRISING PROJECTING A STREAM OF LIQUID FUEL FROM A BURNER INTO ONE END OF AND LONGITUDINALLY OF SAID CHAMBER, SAID STREAM BEING DIRECTED DOWNWARDLY AT AN ANGLE TO IMPINGE ON SAID CHARGE, INTRODUCING A STREAM OF COMPRESSED AIR METAL RINGS HAVING THEIR ENDS JOINED TOGETHER, THE OUTER OF SAID RINGS BEING SUBSTANTIALLY IN THE SHAPE OF THE SURFACE OF A SPHERICAL ZONE AND THE INNER OF SAID RINGS COMPRISING A BELLED ANNULUS, EACH OF SAID RINGS HAVING A PLURALITY OF SMALL OPENINGS THERETHROUGH, A PLURALITY OF NUTS MOUNTED ON THE INNER SURFACE OF EACH OF SAID RINGS WITH EACH OF SAID NUTS SURROUNDING ONE OF SAID OPENINGS, MEANS FOR SUPPORTING SAID COWL COM-
References Cited (Backward Citations)
US1736675A
Cited
US1513828A
Cited
US1554251A
Cited
US1830574A
Cited
US1964544A
Cited
US1860045A
Cited
US1955589A
Cited
US1907140A
Cited
US2025165A
Cited
US2233916A
Cited
US2310454A
Cited
US2362085A
Cited
US2417951A
Cited
US2385261A
Cited
US2466258A
Cited
US2412579A
Cited
US2446511A
Cited
US2484272A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-05-28 | 1954-11-27 | 1955-05-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-05-28 | 1958-11-27 | 1959-05-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-05-28 | 1962-11-27 | 1963-05-29 | $7700.00 | Window Closed / Lapsed |