Patent US3801058A successfully refreshed from Google Patents.
US3801058A
Expired / Lapsed
US
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Apparatus for forming a refractory nozzle body
Assignee: United States Steel Corp
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Filing: 1973-01-15
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Granted: 1974-04-02
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Expires: 1993-01-15
Abstract
Abstract An apparatus for forming a refractory nozzle body in a vessel, such as a tundish from which liquid metal is teemed into a continuous-casting mold. The apparatus comprises a plurality of forming sections, which together are contoured to define a nozzle well. The sections are installed one at a time in an opening in the refractory lining of the vessel. As each section is installed, a layer of plastic refractory is rammed therearound.
Inventors
- 👤 L Boto
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 08:12
CPC Classifications
B; B22; B22D; B22D41/00; B22D41/50; B22D41/52
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
176 words
An apparatus for use in forming a refractory nozzle body in a vessel which has a refractory lining with an opening for the nozzle body, said apparatus comprising a base plate, means for fixing said base plate to the exterior of the vessel at the opening, a first forming section overlying said base plate to be positioned in the portion of the opening adjacent the exterior of the vessel, an additional forming section overlying said first section to be positioned in the portion of the opening adjacent the first-named portion, a rod connected to said base plate and extending through said sections, and means removably connecting each of said sections to said rod, the outer surfaces of said sections defining the contours of portions of a nozzle well, said outer surfaces being spaced from the lining surface when the sections are positioned in the opening to enable successive layers of plastic refractory to be Rammed in the opening around each section in turn as the section is connected to said rod and positioned in the opening.
Claim 2
Independent Claim
176 words
An apparatus for use in forming a refractory nozzle body in a vessel which has a refractory lining with an opening for the nozzle body, said apparatus comprising a base plate, means for fixing said base plate to the exterior of the vessel at the opening, a first forming section overlying said base plate to be positioned in the portion of the opening adjacent the exterior of the vessel, an additional forming section overlying said first section to be positioned in the portion of the opening adjacent the first-named portion, a rod connected to said base plate and extending through said sections, and means removably connecting each of said sections to said rod, the outer surfaces of said sections defining the contours of portions of a nozzle well, said outer surfaces being spaced from the lining surface when the sections are positioned in the opening to enable successive layers of plastic refractory to be Rammed in the opening around each section in turn as the section is connected to said rod and positioned in the opening.
Claim 3
Dependent Claim
31 words
An apparatus as defined in claim 1 in which said rod is threaded, and the means connecting said sections to said rod includes respective nuts engaging said rod over each section.
Claim 4
Dependent Claim
31 words
An apparatus as defined in claim 2 in which the nut over said first section is welded to this section and the other nuts are removable with respect to their sections.
Claim 5
Dependent Claim
30 words
An apparatus as defined in claim 2 in which said sections have sheet metal side walls and the sections other than the first have prongs received in the adjacent section.
Claim 6
Dependent Claim
21 words
An apparatus as defined in claim 2 in which said rod has a key and slot connection with said base plate.
Claim 7
Dependent Claim
13 words
An apparatus as defined in claim 2 in which there are three sections.
References Cited (Backward Citations)
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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) | 1977-04-01 | 1977-10-01 | 1978-04-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-04-01 | 1981-10-01 | 1982-04-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-04-01 | 1985-10-01 | 1986-04-02 | $7700.00 | Window Closed / Lapsed |