US3050796A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of improving foundry molds
Assignee: Meehanite Metal Corp
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Filing: 1960-02-16
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Granted: 1962-08-28
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Expires: 1980-02-16
Abstract
No abstract record available.
Inventors
- 👤 William H Moore
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 15:28
CPC Classifications
B; B22; B22C; B22C1/00; B22C1/16
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
100 words
THE METHOD OF ACCELERATING THE SOLIDIFICATION RATE OF MOLTEN METAL BY CASTING SAID METAL IN A MOLDING MIXTURE FORMING AT LEAST A PORTION OF A MOLD CAVITY, SAID MOLDING MIXTURE CONSISTING OF A HIGH CONDUCTIVITY SUBSTANCE SELECTED FROM THE GROUP CONSISTING OF SILICON CARBIDE AND ZIRCONITE AND CONTAINING A FIRST ADDITIVE OF SODIUM SILICATE IN THE AMOUNT OF FROM 2% TO 12% AND A SECOND ADDITIVE SELECTED FROM THE GROUP CONSISTING OF ZINC, CADMIUM, AND TIN OXIDE IN THE AMOUNT OF FROM 5% TO 25%, SAID ADDITIVE IMPROVING THE HEAT EXTRACTION ABILITY OF SAID MOLDING MIXTURE BY AN ENDITHERMIC REACTION.
Claim 2
Independent Claim
100 words
THE METHOD OF ACCELERATING THE SOLIDIFICATION RATE OF MOLTEN METAL BY CASTING SAID METAL IN A MOLDING MIXTURE FORMING AT LEAST A PORTION OF A MOLD CAVITY, SAID MOLDING MIXTURE CONSISTING OF A HIGH CONDUCTIVITY SUBSTANCE SELECTED FROM THE GROUP CONSISTING OF SILICON CARBIDE AND ZIRCONITE AND CONTAINING A FIRST ADDITIVE OF SODIUM SILICATE IN THE AMOUNT OF FROM 2% TO 12% AND A SECOND ADDITIVE SELECTED FROM THE GROUP CONSISTING OF ZINC, CADMIUM, AND TIN OXIDE IN THE AMOUNT OF FROM 5% TO 25%, SAID ADDITIVE IMPROVING THE HEAT EXTRACTION ABILITY OF SAID MOLDING MIXTURE BY AN ENDITHERMIC REACTION.
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) | 1965-08-27 | 1966-02-26 | 1966-08-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-08-27 | 1970-02-26 | 1970-08-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-08-27 | 1974-02-26 | 1974-08-28 | $7700.00 | Window Closed / Lapsed |