US3989918A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for use in repair of ingot molds
Assignee: Elkem ASA
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Filing: 1975-06-23
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Granted: 1976-11-02
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Expires: 1995-06-23
Abstract
Abstract An apparatus for the repair of ingot molds is disclosed. The ingot mold rests upon a layer of graphite powder whereby current can be passed through the ingot mold without the need for grinding thereof.
Inventors
- 👤 Einar Onarheim
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 20:41
CPC Classifications
B; B22; B22D; B22D7/00; B22D7/06; B22D7/062; B23; B23K; B23K9/00; B23K9/04; B23P; B23P6/00; B23P6/04; F; F27; F27D; F27D11/00; H; H01; H01R; H01R4/00; H01R4/58; H01R4/64
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
40 words
In the method of repairing ingot molds by heating the mold with electric current supplied by an electrode, the improvement comprising resting the ingot mold on a bed of finely divided electrically conductive material which is electrically connected to ground.
Claim 2
Dependent Claim
40 words
In the method of repairing ingot molds by heating the mold with electric current supplied by an electrode, the improvement comprising resting the ingot mold on a bed of finely divided electrically conductive material which is electrically connected to ground.
Claim 3
Dependent Claim
53 words
In an apparatus for the repair of ingot molds by heating the mold with an electric current supplied by an electrode, a contact member for the ingot mold, said contact member comprising a finely divided highly conductive material on which the ingot mold rests, said finely divided highly conductive material being electrically grounded.
Claim 4
Dependent Claim
53 words
In an apparatus for the repair of ingot molds by heating the mold with an electric current supplied by an electrode, a contact member for the ingot mold, said contact member comprising a finely divided highly conductive material on which the ingot mold rests, said finely divided highly conductive material being electrically grounded.
Claim 5
Dependent Claim
15 words
The apparatus of claim 2 wherein the finely divided highly conductive material is graphite powder.
Claim 6
Dependent Claim
20 words
The apparatus of claim 2 wherein the finely divided highly conductive material is contained within a rectangularly shaped shallow container.
Claim 7
Dependent Claim
10 words
The apparatus of claim 4 wherein the container is cooled.
Claim 8
Dependent Claim
17 words
The apparatus of claim 5 wherein the cooling means comprises the circulation of water through the container.
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) | 1979-11-02 | 1980-05-03 | 1980-11-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-11-02 | 1984-05-03 | 1984-11-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-11-02 | 1988-05-03 | 1988-11-02 | $7700.00 | Window Closed / Lapsed |