Patent US3178783A successfully refreshed from Google Patents.
US3178783A
Expired / Lapsed
US
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Hot top for ingot mold
Assignee: Sandvik AB
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Filing: 1962-05-21
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Granted: 1965-04-20
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Expires: 1982-05-21
Abstract
No abstract record available.
Inventors
- 👤 Ednell Daniel Fredrik
- 👤 Edstrom John Olof
- 👤 Davidson Per David
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 15:06
CPC Classifications
B; B22; B22D; B22D7/00; B22D7/06; B22D7/10
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
82 words
AN INGOT CASTING MOLD COMPRISING A MOLD BODY HAVING A BOTTOM WALL AN SUBSTANTIALLY VERTICAL SIDE WALLS SURROUNDING A MOLD CAVITY AND A HOT TOP POSITIONED IN SAID MOLD CAVITY AND SUPPORTED BY SAID SIDE WALLS, SAID HOT TOP CONSISTING OF A PLURALITY OF RELATIVELY THIN, HEAT INSULATING SLABS SECURED TO SAID MOLD WALLS BY A WEDGING ACTION EXERTED AGAINST THE SUBSTANTAILLY VERTICAL EDGES THEREOF, SAID SLABS EACH HAVING ALONG THE LOWER EDGE THEREOF AN OUTWARDLY EXTENDING RIDGE BEARING AGAINST A MOLD
Claim 2
Dependent Claim
82 words
AN INGOT CASTING MOLD COMPRISING A MOLD BODY HAVING A BOTTOM WALL AN SUBSTANTIALLY VERTICAL SIDE WALLS SURROUNDING A MOLD CAVITY AND A HOT TOP POSITIONED IN SAID MOLD CAVITY AND SUPPORTED BY SAID SIDE WALLS, SAID HOT TOP CONSISTING OF A PLURALITY OF RELATIVELY THIN, HEAT INSULATING SLABS SECURED TO SAID MOLD WALLS BY A WEDGING ACTION EXERTED AGAINST THE SUBSTANTAILLY VERTICAL EDGES THEREOF, SAID SLABS EACH HAVING ALONG THE LOWER EDGE THEREOF AN OUTWARDLY EXTENDING RIDGE BEARING AGAINST A MOLD
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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) | 1968-04-19 | 1968-10-19 | 1969-04-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-04-19 | 1972-10-19 | 1973-04-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-04-19 | 1976-10-19 | 1977-04-20 | $7700.00 | Window Closed / Lapsed |