US2745152A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Centrifugal metal casting process and mold apparatus
Assignee: Electric Steel Foundry Co
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Filing: 1954-07-02
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Granted: 1956-05-15
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Expires: 1974-07-02
Abstract
No abstract record available.
Inventors
- 👤 Clarence K Johnson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 18:45
CPC Classifications
B; B22; B22D; B22D13/00; B22D13/02; B22D13/023
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
99 words
IN A CENTRIFUGAL CASTING PROCESS FORMING A CASTING A MOLD, IN WHICH PROCESS MOLTEN METAL IS POURED INTO A MOLD MOUNTED FOR ROTATION AND THE MOLD ROTATED ABOUT AN AXIS TO FORM A CASTING, THE STEPS OF MOUNTING WITHIN SAID MOLD AN ANNULAR CORE HAVING RADIAL RECESSES THEREIN, POURING THE MOLTEN METAL INTO ONE END OF THE MOLD, RESTRAINING, THE LONGITUDINAL FLOW OF THE METAL IN SAID END OF THE MOLD UNTIL THE METAL HAS ATTAINED THE PERIPHERAL SPEED OF THE MOLD, AND THEN RELEASING THE METAL IN A THIN ANNULAR STREAM ALONG THE INSIDE DIAMETER OF THE CORE.
Claim 2
Dependent Claim
99 words
IN A CENTRIFUGAL CASTING PROCESS FORMING A CASTING A MOLD, IN WHICH PROCESS MOLTEN METAL IS POURED INTO A MOLD MOUNTED FOR ROTATION AND THE MOLD ROTATED ABOUT AN AXIS TO FORM A CASTING, THE STEPS OF MOUNTING WITHIN SAID MOLD AN ANNULAR CORE HAVING RADIAL RECESSES THEREIN, POURING THE MOLTEN METAL INTO ONE END OF THE MOLD, RESTRAINING, THE LONGITUDINAL FLOW OF THE METAL IN SAID END OF THE MOLD UNTIL THE METAL HAS ATTAINED THE PERIPHERAL SPEED OF THE MOLD, AND THEN RELEASING THE METAL IN A THIN ANNULAR STREAM ALONG THE INSIDE DIAMETER OF THE CORE.
Claim 3
Dependent Claim
80 words
IN COMBINATION WITH A CENTRIFUGAL MOLD MOUNTED FOR ROTATION AND HAVING A CENTRAL OPENING AT ONE END AND MEANS FOR INTRODUCING MOLTEN METAL INTO SAID OPENING WHILE THE MOLD IS OPERATING, A CORE MOUNTED WITHIN SAID MOLD AND HAVING A RADIAL RECESS THEREIN, AND A CONTROL CORE ADJACENT SAID MOLDING CORE AND SPACED FROM THE INLET OF SAID MOLD TO PROVIDE A RESERVOIR, SAID CONTROL CORE HAVING A PLURALITY OF OPENINGS ALIGNED GENERALLY WITH THE INSIDE DIAMETER OF SAID CORE.
Claim 4
Dependent Claim
80 words
IN COMBINATION WITH A CENTRIFUGAL MOLD MOUNTED FOR ROTATION AND HAVING A CENTRAL OPENING AT ONE END AND MEANS FOR INTRODUCING MOLTEN METAL INTO SAID OPENING WHILE THE MOLD IS OPERATING, A CORE MOUNTED WITHIN SAID MOLD AND HAVING A RADIAL RECESS THEREIN, AND A CONTROL CORE ADJACENT SAID MOLDING CORE AND SPACED FROM THE INLET OF SAID MOLD TO PROVIDE A RESERVOIR, SAID CONTROL CORE HAVING A PLURALITY OF OPENINGS ALIGNED GENERALLY WITH THE INSIDE DIAMETER OF SAID CORE.
References Cited (Backward Citations)
US1425927A
Cited
US1477508A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-05-15 | 1959-11-14 | 1960-05-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-05-15 | 1963-11-14 | 1964-05-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-05-15 | 1967-11-14 | 1968-05-15 | $7700.00 | Window Closed / Lapsed |