Patent US3354939A successfully refreshed from Google Patents.
US3354939A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for handling molten metal
Assignee: Calderon Automation Inc
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Filing: 1964-07-17
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Granted: 1967-11-28
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Expires: 1984-07-17
Abstract
No abstract record available.
Inventors
- 👤 Calderon Albert
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 17:13
CPC Classifications
B; B22; B22D; B22D41/00; B22D41/08; B22D11/00; B22D11/10; C; C21; C21C; C21C7/00; C21C7/10
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
155 words
IN A RECEPTACLE FOR MOLTEN STEEL OR THE LIKE MOLTEN METAL, A NOZZLE LOCATED ADJACENT THE LOWER END OF SAID RECEPTACLE AND HAVING A BORE COMMUNICATING WITH THE INTERIOR OF SAID RECEPTABLE, A VALVE BODY LOCATED BELOW SAID NOZZLE AND HAVING AN UPPER EXTREMLY MOVABLE IN A VERTICAL STRAIGHT LINE PATH DEFINED BY THE AXIS OF SAID NOZZLE BORE TO CONTROL THE FLOW OF METAL FROM THE RECEPTABLE THROUGH SAID NOZZLE BORE, MEANS DEFINING A CHAMBER BELOW AND CARRIED BY SAID VALVE BODY, MEANS DEFINING AN ANNULAR FLANGE CIRCUMSCRIBING THE NOZZLE AND THE VALVE BODY TO PERIPHERALLY CONFINE THE FLOW OF MOLTEN METAL FROM THE NOZZLE AND VALVE BODY, AND ACTUATABLE POWER MEANS EXTERNALLY OF SAID RECEPTACLE FOR MOVING SAID VALVE BODY AND SAID CHAMBER ALONG THE VERTICAL STRAIGHT LINE PATH TO ACCOMMODATE A VARIABLE FLOW OF MOLTEN METAL THROUGH SAID NOZZLE BORE AGAINST SAID UPPER EXTREMITY OF SAID VALVE BODY AND INTO SAID CHAMBER.
Claim 2
Dependent Claim
155 words
IN A RECEPTACLE FOR MOLTEN STEEL OR THE LIKE MOLTEN METAL, A NOZZLE LOCATED ADJACENT THE LOWER END OF SAID RECEPTACLE AND HAVING A BORE COMMUNICATING WITH THE INTERIOR OF SAID RECEPTABLE, A VALVE BODY LOCATED BELOW SAID NOZZLE AND HAVING AN UPPER EXTREMLY MOVABLE IN A VERTICAL STRAIGHT LINE PATH DEFINED BY THE AXIS OF SAID NOZZLE BORE TO CONTROL THE FLOW OF METAL FROM THE RECEPTABLE THROUGH SAID NOZZLE BORE, MEANS DEFINING A CHAMBER BELOW AND CARRIED BY SAID VALVE BODY, MEANS DEFINING AN ANNULAR FLANGE CIRCUMSCRIBING THE NOZZLE AND THE VALVE BODY TO PERIPHERALLY CONFINE THE FLOW OF MOLTEN METAL FROM THE NOZZLE AND VALVE BODY, AND ACTUATABLE POWER MEANS EXTERNALLY OF SAID RECEPTACLE FOR MOVING SAID VALVE BODY AND SAID CHAMBER ALONG THE VERTICAL STRAIGHT LINE PATH TO ACCOMMODATE A VARIABLE FLOW OF MOLTEN METAL THROUGH SAID NOZZLE BORE AGAINST SAID UPPER EXTREMITY OF SAID VALVE BODY AND INTO SAID CHAMBER.
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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) | 1970-11-27 | 1971-05-29 | 1971-11-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-11-27 | 1975-05-29 | 1975-11-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-11-27 | 1979-05-29 | 1979-11-28 | $7700.00 | Window Closed / Lapsed |