US3608618A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electroslag ingot production
Assignee: Associated Electrical Industries Ltd
•
Filing: 1968-01-30
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Granted: 1971-09-28
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Expires: 1988-01-30
Abstract
Abstract The electroslag process of ingot production in a mould is improved by providing bottom contact to the ingot via a stub or spigot provided at its bottom end.
Inventors
- 👤 Peter Thomas Reginald Maskall
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 23:25
CPC Classifications
C; C22; C22B; C22B9/00; C22B9/16; C22B9/18
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
113 words
An electroslag mold apparatus for melting an electrode within an electroslag mold, comprising, in combination: a. a mold base having an upper wall, b. a mold wall upstanding from said mold base and forming a mold cavity, c. an opening in said mold base, said opening having a cross section smaller than the internal cross section of said mold cavity, d. an electroconduCtive stub positioned within said opening and having an upper end, e. means for establishing electrical connection to said stub, f. said stub upper end being substantially flush with and substantially terminating at said upper wall, said apparatus being in the claimed relationship prior to the start of the melting operation.
Claim 2
Dependent Claim
23 words
The apparatus of claim 1 and including a boss supported in depending fashion from said base, the said boss substantially surrounding said stub.
Claim 3
Dependent Claim
29 words
The apparatus of claim 2 and including a clamp supported on said boss, said clamp mechanically gripping said stub to provide electrical connection between said stub and said base.
Claim 4
Dependent Claim
24 words
The apparatus of claim 1 and including electrical conductive means mounted on said base and wherein said base is formed of electrically conductive material.
Claim 5
Dependent Claim
21 words
The apparatus of claim 2 and wherein the said boss is formed integrally with, and vertically extending downwardly from, said base.
Claim 6
Dependent Claim
20 words
The apparatus of claim 1 and wherein said stub is a preformed element adapted for insertion in the said opening.
Claim 7
Dependent Claim
19 words
The apparatus of claim 1 and wherein said stub has both heat and current transferring relationship with said base.
Claim 8
Dependent Claim
16 words
The apparatus of claim 1 and wherein said stub is formed of a castable metal material.
References Cited (Backward Citations)
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Cited
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Cited
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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) | 1974-09-27 | 1975-03-29 | 1975-09-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-09-27 | 1979-03-29 | 1979-09-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-09-27 | 1983-03-29 | 1983-09-28 | $7700.00 | Window Closed / Lapsed |