Patent US3872903A successfully refreshed from Google Patents.
Patent US3227434A successfully refreshed from Google Patents.
US3227434A
Expired / Lapsed
US
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Converter
Assignee: Koninklijke Nederlandsche Hoogovens en Staalfabrieken NV
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Filing: 1963-04-05
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Granted: 1966-01-04
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Expires: 1983-04-05
Abstract
Abstract 1,041,543. Metallurgical converters. KONINKLIJKE NEDERLANDSCHE HOOGOVENS EN STAALFABRIKEN N.V. April 8, 1963 [April 10, 1962], No. 13878/63. Heading F4B. A converter comprises a metal shell with a lining of refracotry bricks, said lining having a cylindrical part 8, a bottom 9 and a conical part 10 narrowing towards an eccentrically placed mouth, the join between the cylindrical and conical parts, at least in the region of the plane of the drawing, being angular (i.e. not rounded). A pouring spout 6 is provided. The axes 4 and 5 of the cylindrical and conical parts respectively are parallel. The converter can be tilted about pivots 7.
Inventors
- 👤 Voet Elias
- 👤 Hendricus W J Wijdeveld
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 21:39
CPC Classifications
C; C21; C21C; C21C5/00; C21C5/28; C21C5/42; C21C5/44
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
115 words
A CONVERTER HAVING A LINING OF BRICKS OF A MINIMUM NUMBER OF DIFFERENT SHAPES AND HAVING AN OUTER METAL SHELL, SAID CONVERTER COMPRISING, IN COMBINATION: A CYLINDRICAL BODY PORTION DEFINING A CYLINDER AXIS; A BOTTOM ELEMENT ON END OF SAID BODY PORTION; AND A CONICAL TOP PORTION ADJACENT THE OTHER END OF THE BODY PORTION, NARROWING AWAY FROM SAID BODY PORTION, SAID TOP PORTION DEFINING A CONE AXIS, SAID CONE AXIS BEING PARALLEL TO, AND SPACED A GIVEN DISTANCE FROM, THE CYLINDER AXIS, THE INTERSECTION BETWEEN THE BODY AND TOP PORTIONS BEING A SHARPLY DEFINED ANGLE, SAID CONE HAVING AN OPENING AT ITS NARROWER END WHICH IS SUBSTANTIALLY SYMMETRICAL WITH RESPECT TO THE CONE AXIS,
Claim 2
Dependent Claim
115 words
A CONVERTER HAVING A LINING OF BRICKS OF A MINIMUM NUMBER OF DIFFERENT SHAPES AND HAVING AN OUTER METAL SHELL, SAID CONVERTER COMPRISING, IN COMBINATION: A CYLINDRICAL BODY PORTION DEFINING A CYLINDER AXIS; A BOTTOM ELEMENT ON END OF SAID BODY PORTION; AND A CONICAL TOP PORTION ADJACENT THE OTHER END OF THE BODY PORTION, NARROWING AWAY FROM SAID BODY PORTION, SAID TOP PORTION DEFINING A CONE AXIS, SAID CONE AXIS BEING PARALLEL TO, AND SPACED A GIVEN DISTANCE FROM, THE CYLINDER AXIS, THE INTERSECTION BETWEEN THE BODY AND TOP PORTIONS BEING A SHARPLY DEFINED ANGLE, SAID CONE HAVING AN OPENING AT ITS NARROWER END WHICH IS SUBSTANTIALLY SYMMETRICAL WITH RESPECT TO THE CONE AXIS,
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) | 1969-01-03 | 1969-07-05 | 1970-01-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-01-03 | 1973-07-05 | 1974-01-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-01-03 | 1977-07-05 | 1978-01-04 | $7700.00 | Window Closed / Lapsed |