US2796644A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method and apparatus for casting refractory metals
Assignee: NL Industries Inc
•
Filing: 1952-05-03
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Granted: 1957-06-25
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Expires: 1972-05-03
Abstract
No abstract record available.
Inventors
- 👤 William E Kuhn
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 22:51
CPC Classifications
B; B22; B22C; B22C9/00; B22C9/02; B22C9/04
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
127 words
A PROCESS FOR MAKING CASTINGS OF A METAL OF THE GROUP CONSISTING OF TITANIUM, ZIRCONIUM, AND THEIR ALLOYS WHICH COMPRISES INTRODUCING A MOLD INTO A CASING CAHMBER, INTRODUCING SAID METAL INTO A FUSION CHAMBER, SAID FUSION CHAMBER BEING ABOVE SAID CASTING CHAMBER AND HAVING AN OUTLET COMMUNICATING WITH SAID CASTING CHAMBER, MELTING SAID METAL IN SAID FUSION CHAMBER ON A SURFACE WHICH IS NOT WETTED BY THE MOLETN METAL, INTERMITTENTLY CLOSING SAID OUTLET WITH A MOLD AND BY TEMPORARILY TILTING SAID SURFACE, FILLING SAID MOLD WITH SAID MOLTEN METAL, REMOVING THE FILLED MOLD FROM SAID OUTLET, AND SUBSEQUENTLY REMOVING SAID FILLED MOLD FROM POSITION BENEATH SAID OUTLET WHILE SIMULTANEOUSLY MOVING ANOTHER MOLD INTO SAID POSITION, SAID MELTING AND CASTING BEING CARRIED ON IN THE ABSENCE OF AIR.
Claim 2
Dependent Claim
133 words
IN APPARATUS FOR MAKING CASTINGS OF A METAL OF THE GROUP CONSISTING OF TITANIUM, ZIRCONIUM AND THEIR ALLOYS A TILTABLE FURNACE COMPRISING A HOUSING, A MELTING HEARTH IN SAID HOUSING AND TILTABLE THEREWITH, MEANS FOR MELTING A METAL ON SAID HEARTH, SAID HEARTH BEING SHAPED TO PROVIDE A PORTION ADAPTED, IN ONE POSITION OF SAID FURNACE, TO HOLD MOLTEN METAL AND TO PROVIDE A DOWNWARDLY DIREACTED POURING OPENING THROUGH WHICH IN ANOTHER POSITION OF SAID FURNACE, MOLTEN METAL MAY FLOW, A MOLD CHAMBER IN SAID HOUSING, SAID CHAMBER BEING FORMED IN PART BY SAID HEARTH, AND A MOLD IN SAID CHAMBER BENEATH SAID POURING OPENING ADAPTED TO RECEIVE MOLTEN METAL, SAID HOUSING BEING ADAPTED TO EXCLUDE AIR AND HAVING AN INLET AND AN OUTLET ADAPTED TO ALLOW FLOW OF AN INERT GAS THERETHROUGH.
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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) | 1960-06-24 | 1960-12-24 | 1961-06-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-06-24 | 1964-12-24 | 1965-06-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-06-24 | 1968-12-24 | 1969-06-25 | $7700.00 | Window Closed / Lapsed |