US2745153A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for dispensing shots of molten metal
Assignee: Dow Chemical Co
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Filing: 1955-02-02
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Granted: 1956-05-15
•
Expires: 1975-02-02
Abstract
No abstract record available.
Inventors
- 👤 Francis L Burkett
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 02:14
CPC Classifications
B; B22; B22D; B22D17/00; B22D17/20; B22D17/30
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
193 words
AN APPARATUS FOR DISPENSING SHOTS OF MOLTEN READILY OXIDIZABLE METAL COMPRISING IN COMBINATION WITH A MELTING POT ADAPTED TO CONTAIN A QUANTITY OF THE MOLTEN METAL TO BE DISPENSED SHOTWISE OF A SLOPING PIPE LEADING FROM THE POT UNDER THE FORCE OF GRAVITY TO THE DISCHARGE END, A VALVE ASSEMBLY ON THE DISCHARGE END OF THE PIPE REMOTE FROM THE MELTING POT FOR CONTROLLING THE RELEASE OF MOLTEN METAL FROM THE PIPE, SAID VALVE COMPRISING A BODY MEMBER HAVING AN AXIAL BORE FROM END TO END AND A PORT IN THE SIDE INTERMEDIATE THE ENDS OF THE BORE AND COMMUNICATING WITH THE DISCHARGE END OF THE PIPE, THE UPPER END OF THE BORE OF SAID BODY MEMBER BEING ABOVE THE WORKING LEVEL OF THE MOLTEN METAL IN THE POT, A VALVE SEAT IN THE LOWER END OF THE BORE OF THE BODY, SAID SEAT COMPRISING AN ANNULUS THE INNER PERIPHERY OF WHICH IS CYLINDRICAL AND THE UPPER FACE OF WHICH SLOPES DOWNWARDLY FROM THE OUTER TO THE INNER PERIPHERY AS A CONICAL RECESS HAVING AN INCLUDED ANGLE OF BETWEEN 20* AND 120*, A VALVE STEM EXTENDING INTO THE VALVE BODY THROUGH THE UPPER
Claim 2
Independent Claim
193 words
AN APPARATUS FOR DISPENSING SHOTS OF MOLTEN READILY OXIDIZABLE METAL COMPRISING IN COMBINATION WITH A MELTING POT ADAPTED TO CONTAIN A QUANTITY OF THE MOLTEN METAL TO BE DISPENSED SHOTWISE OF A SLOPING PIPE LEADING FROM THE POT UNDER THE FORCE OF GRAVITY TO THE DISCHARGE END, A VALVE ASSEMBLY ON THE DISCHARGE END OF THE PIPE REMOTE FROM THE MELTING POT FOR CONTROLLING THE RELEASE OF MOLTEN METAL FROM THE PIPE, SAID VALVE COMPRISING A BODY MEMBER HAVING AN AXIAL BORE FROM END TO END AND A PORT IN THE SIDE INTERMEDIATE THE ENDS OF THE BORE AND COMMUNICATING WITH THE DISCHARGE END OF THE PIPE, THE UPPER END OF THE BORE OF SAID BODY MEMBER BEING ABOVE THE WORKING LEVEL OF THE MOLTEN METAL IN THE POT, A VALVE SEAT IN THE LOWER END OF THE BORE OF THE BODY, SAID SEAT COMPRISING AN ANNULUS THE INNER PERIPHERY OF WHICH IS CYLINDRICAL AND THE UPPER FACE OF WHICH SLOPES DOWNWARDLY FROM THE OUTER TO THE INNER PERIPHERY AS A CONICAL RECESS HAVING AN INCLUDED ANGLE OF BETWEEN 20* AND 120*, A VALVE STEM EXTENDING INTO THE VALVE BODY THROUGH THE UPPER
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) | 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 |