Patent US938683A successfully refreshed from Google Patents.
US3204301A
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US
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Casting process and apparatus for obtaining unidirectional solidification
Assignee: EDITH L TAYLOR
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Filing: 1960-10-24
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Granted: 1965-09-07
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Expires: 1980-10-24
Abstract
No abstract record available.
Inventors
- 👤 Jr Merton C Flemings
- 👤 Howard F Taylor
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 02:02
CPC Classifications
B; B22; B22D; B22D27/00; B22D27/04; B22D27/045
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
123 words
A MOLD FOR USE IN CASTING A STEEL INGOT, COMPRISING FIXED BOTTOM AND SIDE WALLS AND A SEPARABLE TOP WALL COMPLETELY ENCLOSING A MOLD CAVITY THEREBETWEEN, SAID BOTTOM WALL BEING FORMED OF HEAT CONDUCTIVE MATERIAL, SAID SIDE AND TOP WALLS BEING FORMED OF IMPERFORATE EXOTHERMIC MATERIAL WHICH EXTENDS CONTINUOUSLY OVER THE SIDES AND TOP OF SAID CAVITY WHEN SAID TOP WALL IS IN PLACE, WHEREBY MOLTEN STEEL MAY BE POURED INTOSAID MOLD WITH THE TOP WALL REMOVED AND THEN SAID TOP WALL MAY BE SET IN PLACE TO SEAL SAID MOLD CAVITY, THE COMBUSTION OF SAID EXOTHERMIC MATERIAL PREVENTING LOSS OF HEAT THROUGH SAID TOP AND SIDE WALLS TO ENSURE UNIDIRECTIONAL SOLIDIFICATION OF SAID INGOT AS HEAT IS WITHDRAWN THROUGH SAID BOTTOM WALL.
Claim 2
Dependent Claim
123 words
A MOLD FOR USE IN CASTING A STEEL INGOT, COMPRISING FIXED BOTTOM AND SIDE WALLS AND A SEPARABLE TOP WALL COMPLETELY ENCLOSING A MOLD CAVITY THEREBETWEEN, SAID BOTTOM WALL BEING FORMED OF HEAT CONDUCTIVE MATERIAL, SAID SIDE AND TOP WALLS BEING FORMED OF IMPERFORATE EXOTHERMIC MATERIAL WHICH EXTENDS CONTINUOUSLY OVER THE SIDES AND TOP OF SAID CAVITY WHEN SAID TOP WALL IS IN PLACE, WHEREBY MOLTEN STEEL MAY BE POURED INTOSAID MOLD WITH THE TOP WALL REMOVED AND THEN SAID TOP WALL MAY BE SET IN PLACE TO SEAL SAID MOLD CAVITY, THE COMBUSTION OF SAID EXOTHERMIC MATERIAL PREVENTING LOSS OF HEAT THROUGH SAID TOP AND SIDE WALLS TO ENSURE UNIDIRECTIONAL SOLIDIFICATION OF SAID INGOT AS HEAT IS WITHDRAWN THROUGH SAID BOTTOM WALL.
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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) | 1968-09-06 | 1969-03-08 | 1969-09-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-09-06 | 1973-03-08 | 1973-09-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-09-06 | 1977-03-08 | 1977-09-07 | $7700.00 | Window Closed / Lapsed |