Patent US3705616A successfully refreshed from Google Patents.
US3705616A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for casting molten metal in bottom-pouring molds
Assignee: Gebauer and Lehrner
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Filing: 1970-04-23
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Granted: 1972-12-12
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Expires: 1990-04-23
Abstract
Abstract First chamber means define a vertically elongated first chamber and have a bottom formed with a bottom opening communicating with said first chamber. The first chamber means are provided with an overflow inlet communicating with said first chamber on a predetermined intermediate level thereof. Second chamber means define a horizontally elongated second chamber, which is smaller in cross-sectional area than said first chamber and has one end portion communicating with said bottom opening and an opposite end portion formed with an upwardly directed opening adapted to communicate with a bottom-pouring ingot mold. A plug is operable to selectively close and open said bottom opening.
Inventors
- 👤 Oskar Tenner
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 20:53
CPC Classifications
B; B22; B22D; B22D39/00
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
159 words
An apparatus for casting molten metal, which comprises a housing defining a vertically elongated first chamber, said first chamber having a bottom formed with a bottom opening communicating with said first chamber, said housing being provided with inlet means communicating with said first chamber on a predetermined intermediate level thereof and including means for automatically maintaining constant the level of said molten metal in said first chamber during the casting operation, said housing defining a horizontally elongated second chamber, the latter being smaller in cross-sectional area than said first chamber and has one end portion communicating with said bottom opening and an opposite end portion formed with an upwardly directed exit opening, adapted to communicate with a bottom-pouring removable mold which is separate from said housing and disposed below said constant level of molten metal, a plug operable to selectively close and open said bottom opening, and means for heating the molten metal in said first and second chambers.
Claim 2
Independent Claim
159 words
An apparatus for casting molten metal, which comprises a housing defining a vertically elongated first chamber, said first chamber having a bottom formed with a bottom opening communicating with said first chamber, said housing being provided with inlet means communicating with said first chamber on a predetermined intermediate level thereof and including means for automatically maintaining constant the level of said molten metal in said first chamber during the casting operation, said housing defining a horizontally elongated second chamber, the latter being smaller in cross-sectional area than said first chamber and has one end portion communicating with said bottom opening and an opposite end portion formed with an upwardly directed exit opening, adapted to communicate with a bottom-pouring removable mold which is separate from said housing and disposed below said constant level of molten metal, a plug operable to selectively close and open said bottom opening, and means for heating the molten metal in said first and second chambers.
Claim 3
Dependent Claim
17 words
The apparatus, as set forth in claim 1, in which said inlet means comprises an overflow inlet.
Claim 4
Dependent Claim
22 words
The apparatus, as set forth in claim 2, in which said overflow inlet comprises an overflow inlet pipe connected to said housing.
Claim 5
Dependent Claim
34 words
The apparatus, as set forth in claim 1, which comprises a bottom-pouring mold, which is mounted to communicate with said upwardly directed exit opening and has a mold cavity disposed below said intermediate level.
Claim 6
Dependent Claim
50 words
The apparatus, as set forth in claim 1, which comprises a stopper rod connected to and extending upwardly from said plug in said first chamber and above said level of molten metal and guiding means disposed above said level of molten metal and in guiding engagement with said stopper rod.
Claim 7
Dependent Claim
25 words
The apparatus, as set forth in claim 5, which comprises manually operable means for operating said stopper rod to open and close said bottom opening.
Claim 8
Dependent Claim
25 words
The apparatus, as set forth in claim 5, which comprises electrically controlled means for operating said stopper rod to open and close said bottom opening.
Claim 9
Dependent Claim
21 words
The apparatus, as set forth in claim 1, which comprises a source of molten metal in communication with said inlet means.
Claim 10
Dependent Claim
16 words
The apparatus, as set forth in claim 8, in which said source comprises a melting furnace.
Claim 11
Dependent Claim
15 words
The apparatus, as set forth in claim 8, in which said source comprises a ladle.
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) | 1975-12-12 | 1976-06-12 | 1976-12-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-12-12 | 1980-06-12 | 1980-12-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-12-12 | 1984-06-12 | 1984-12-12 | $7700.00 | Window Closed / Lapsed |