Patent US3235243A successfully refreshed from Google Patents.
US3235243A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for producing ultraclean alloy steels
Assignee: Pennwalt Corp
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Filing: 1963-09-12
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Granted: 1966-02-15
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Expires: 1983-09-12
Abstract
No abstract record available.
Inventors
- 👤 Kendrick C Taylor
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 14:27
CPC Classifications
C; C21; C21C; C21C7/00; C21C7/10
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
104 words
MOLTEN METAL HANDLING APPARATUS COMPRISING A CHAMBER, MEANS FOR EVACUATING SAID CHAMBR, A LADLE IN SAID CHAMBER, A STAND IN SAID CHAMBER, SAID LADLE BEING REMOVABLY SUPPORTED BY SAID STAND, SAID CHAMBER HAVING AN OPENING THROUGH WHICH SAID LADLE MAY BE MOVED INTO AND OUT OF THE CHAMBER, MEANS FOR SIMULTANEOUSLY INDUCING CIRCULATION CURRENT IN MOLTEN METAL IN THE LADLE AND INTRODUCING HEAT INTO METAL IN THE LADLE WHEN THE LADLE IS DISPOSED WITHIN SID CHAMBER,MEANS FOR SELECTIVELY DISCHARGING MOLTEN METAL FROMTHE LADLE WHILE THE LADLE IS DISPOSED WITHIN SAID CHAMBER, AND SAID LADLE INCLUDING A FIBERGLASS SHELL HAVING A REFRACTORY LINER DISPOSED THEREWITHIN.
Claim 2
Dependent Claim
104 words
MOLTEN METAL HANDLING APPARATUS COMPRISING A CHAMBER, MEANS FOR EVACUATING SAID CHAMBR, A LADLE IN SAID CHAMBER, A STAND IN SAID CHAMBER, SAID LADLE BEING REMOVABLY SUPPORTED BY SAID STAND, SAID CHAMBER HAVING AN OPENING THROUGH WHICH SAID LADLE MAY BE MOVED INTO AND OUT OF THE CHAMBER, MEANS FOR SIMULTANEOUSLY INDUCING CIRCULATION CURRENT IN MOLTEN METAL IN THE LADLE AND INTRODUCING HEAT INTO METAL IN THE LADLE WHEN THE LADLE IS DISPOSED WITHIN SID CHAMBER,MEANS FOR SELECTIVELY DISCHARGING MOLTEN METAL FROMTHE LADLE WHILE THE LADLE IS DISPOSED WITHIN SAID CHAMBER, AND SAID LADLE INCLUDING A FIBERGLASS SHELL HAVING A REFRACTORY LINER DISPOSED THEREWITHIN.
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) | 1969-02-14 | 1969-08-16 | 1970-02-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-02-14 | 1973-08-16 | 1974-02-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-02-14 | 1977-08-16 | 1978-02-15 | $7700.00 | Window Closed / Lapsed |