US3931913A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Slide gate nozzle
Assignee: Stopinc AG
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Filing: 1974-11-18
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Granted: 1976-01-13
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Expires: 1994-11-18
Abstract
Abstract A slide gate nozzle for the spout of metallurgical vessels includes a pair of plates, arranged on the opening of a pouring channel. The plates include a fixed bottom plate and a displaceable sliding plate. A metal part is provided in the pouring channel of the spout of the vessel. This part closes the cross section of the channel and is constructed in such a manner as to be cooled and/or give off heat on the side thereof which is turned away from the interior of the vessel.
Inventors
- 👤 Ernst Meier
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 10:58
CPC Classifications
B; B22; B22D; B22D41/00; B22D41/14; B22D41/44; B22D41/46; B22D41/22; B22D41/42
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
102 words
A slide gate nozzle for the spout of a metallurgical vessel said slide gate nozzle comprising: a pair of plates arranged on the opening of a pouring channel of said spout, said pair of plates including a fixed bottom plate and a displaceable sliding plate; and a metal element positioned in said pouring channel of said spout, said element closing the cross section of said channel, said metal element, on the side thereof turned toward the interior of said vessel, being provided with an insulating layer of refractory material, the other side of said metal element being free for radiation of heat.
Claim 2
Dependent Claim
102 words
A slide gate nozzle for the spout of a metallurgical vessel said slide gate nozzle comprising: a pair of plates arranged on the opening of a pouring channel of said spout, said pair of plates including a fixed bottom plate and a displaceable sliding plate; and a metal element positioned in said pouring channel of said spout, said element closing the cross section of said channel, said metal element, on the side thereof turned toward the interior of said vessel, being provided with an insulating layer of refractory material, the other side of said metal element being free for radiation of heat.
Claim 3
Dependent Claim
50 words
A slide gate nozzle as claimed in claim 1, wherein said metal element has the shape of an inverted thin walled cup having a bottom turned toward the interior of the vessel and a wall with a flange forming a seat in cooperation with the wall of said pouring channel.
Claim 4
Dependent Claim
21 words
A slide gate nozzle as in claim 2, wherein said cup-shaped metal element has in the wall thereof a longitudinal cut.
Claim 5
Dependent Claim
17 words
A slide gate nozzle as claimed in claim 1, wherein said metal element is formed of steel.
Claim 6
Dependent Claim
116 words
A slide gate nozzle for the spout of a metallurgical vessel said slide gate nozzle comprising: a pair of plates arranged on the opening of a pouring channel of said spout, said pair of plates including a fixed bottom plate and a displaceable sliding plate; a metal element positioned in said pouring channel of said spout, said element closing the cross section of said channel, said metal element being provided with perforations for the purpose of introducing gas into the interior of said vessel; and said sliding plate having therein a gas permeable refractory brick connected to a gas connection, said refractory brick being positioned below said pouring channel in the closed position of the slide.
Claim 7
Dependent Claim
116 words
A slide gate nozzle for the spout of a metallurgical vessel said slide gate nozzle comprising: a pair of plates arranged on the opening of a pouring channel of said spout, said pair of plates including a fixed bottom plate and a displaceable sliding plate; a metal element positioned in said pouring channel of said spout, said element closing the cross section of said channel, said metal element being provided with perforations for the purpose of introducing gas into the interior of said vessel; and said sliding plate having therein a gas permeable refractory brick connected to a gas connection, said refractory brick being positioned below said pouring channel in the closed position of the slide.
Claim 8
Dependent Claim
47 words
A slide gate nozzle as claimed in claim 5, wherein said metal element has the shape of an inverted thin walled cup having a bottom turned toward the interior of the vessel and a wall with a flange positioned between said fixed bottom plate and said spout.
Claim 9
Dependent Claim
17 words
A slide gate nozzle as claimed in claim 5, wherein said metal element is formed of steel.
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) | 1979-01-12 | 1979-07-14 | 1980-01-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-01-12 | 1983-07-14 | 1984-01-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-01-12 | 1987-07-14 | 1988-01-13 | $7700.00 | Window Closed / Lapsed |