Patent US3773226A successfully refreshed from Google Patents.
US3773226A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Container with sliding shutter for a liquid melt
Assignee: Didier Werke AG
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Filing: 1971-03-12
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Granted: 1973-11-20
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Expires: 1991-03-12
Abstract
Abstract A container with a sliding shutter for a liquid melt having an orifice plate of refractory material with a flow passage fixed on the bottom of the container. A slidable valve plate has a flow passage opposite the orifice plate. A gas permeable body through which gas can be fed to the melt cooperates with the flow passage of the orifice plate. A plurality of gas conduits are connected with the gas permeable body for feeding selectively various gases to the melt. The conduits are provided with a three-way valve.
Inventors
- 👤 H Kutzer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 12:21
CPC Classifications
B; B22; B22D; B22D41/00; B22D41/14; B22D41/22; B22D41/42
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
135 words
A container for a liquid melt and having a sliding shutter for the discharge of said liquid melt, said container comprising: a refractory block having an inlet hole; an orifice plate of refractory material fixed to the bottom of said refractory block, said orifice plate having an orifice therein in communication with said inlet hole; a slidable valve plate sealingly and slidably positioned against said orifice plate, said valve plate having a flow passage therethrough; a porous gas premeable refractory body positioned in said orifice of said orifice plate; a conduit extending through said orifice plate to said gas premeable body; and a plurality of conduit means communicating with said conduit and including means to allow the selective communication of a plurality of different gases to said conduit and thus to said gas premeable body.
Claim 2
Dependent Claim
135 words
A container for a liquid melt and having a sliding shutter for the discharge of said liquid melt, said container comprising: a refractory block having an inlet hole; an orifice plate of refractory material fixed to the bottom of said refractory block, said orifice plate having an orifice therein in communication with said inlet hole; a slidable valve plate sealingly and slidably positioned against said orifice plate, said valve plate having a flow passage therethrough; a porous gas premeable refractory body positioned in said orifice of said orifice plate; a conduit extending through said orifice plate to said gas premeable body; and a plurality of conduit means communicating with said conduit and including means to allow the selective communication of a plurality of different gases to said conduit and thus to said gas premeable body.
Claim 3
Dependent Claim
27 words
A container as claimed in claim 1, wherein said gas premeable body comprises a ring-shaped insert positioned within said orifice, said insert having a flow passage therethrough.
Claim 4
Dependent Claim
16 words
A container as claimed in claim 2, wherein said conduit extends radially through said orifice plate.
Claim 5
Dependent Claim
43 words
A container as claimed in claim 1, wherein said gas permeable body comprises a pouring insert positioned in said inlet hole of said refractory block, said insert further extending into said orifice in said orifice plate, said insert having a flow passage therethrough.
Claim 6
Dependent Claim
20 words
A container as claimed in claim 4, wherein said conduit extends substantially vertically through said orifice plate to said insert.
Claim 7
Dependent Claim
37 words
A container as claimed in claim 1, wherein said plurality of conduit means comprises at least one conduit connected to a supply of inert gas and at least one conduit connected to a supply of reaction gas.
Claim 8
Dependent Claim
36 words
A container as claimed in claim 6, wherein said means to allow selective communication comprises a three-way valve connected to said conduit and to said conduits connected to said supplies of inert gas and reaction gas.
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) | 1976-11-19 | 1977-05-21 | 1977-11-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-11-19 | 1981-05-21 | 1981-11-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-11-19 | 1985-05-21 | 1985-11-20 | $7700.00 | Window Closed / Lapsed |