Patent US1038526A successfully refreshed from Google Patents.
US3240588A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method and apparatus for treating molten metal
Assignee: Finkl A and Sons Co
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Filing: 1961-01-09
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Granted: 1966-03-15
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Expires: 1981-01-09
Abstract
No abstract record available.
Inventors
- 👤 Charles W Finkl
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 18:48
CPC Classifications
C; C21; C21C; C21C7/00; C21C7/10
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
140 words
A METHOD OF TREATING LARGE BATCHES OF MOLTEN METAL INCLUDING THE STEPS OF POURING MOLTEN METAL INTO A STATIONARY TREATMENT VESSEL, SUBJECTING THE MOLTEN METAL IN THE TREATMENT VESSEL TO A VACUUM WHILE THE TREATMENT VESSEL REMAINS STATIONARY, ADDING HEAT TO THE MOLTEN METAL IN THE TREATMENT VESSEL BY PASSING INDUCTION HEATING CURRENTS THROUGH THE MOLTEN METAL, INSERTING A TRANSFER TUBE INTO THE MOLTEN METAL NEAR THE END OF THE TREATMENT, AND TRANSFERRING THE MOLTEN METAL FROM THE STATIONARY TREATMENT VESSEL TO A TRANFSER BY SUBJECTING THE SURFACE OF THE METAL TO A GAS UNDER A PRESSURE SUFFCIENT TO FORCE THE MOLTEN METAL UPWARDLY THROUGH THE TRANSFER TUBE EXTENDING INTO THE TRANSFER VESSEL, SAID GAS BEING NONDELETERIOUS WITH RESPECT TO THE METAL UNDERGOING TREATMENT, SAID TREATMENT VESSEL BEING MAINTAINED STATIONARY DURING TRANSFER OF THE MOLTEN METAL INTO THE TRANFER VESSEL.
Claim 2
Independent Claim
140 words
A METHOD OF TREATING LARGE BATCHES OF MOLTEN METAL INCLUDING THE STEPS OF POURING MOLTEN METAL INTO A STATIONARY TREATMENT VESSEL, SUBJECTING THE MOLTEN METAL IN THE TREATMENT VESSEL TO A VACUUM WHILE THE TREATMENT VESSEL REMAINS STATIONARY, ADDING HEAT TO THE MOLTEN METAL IN THE TREATMENT VESSEL BY PASSING INDUCTION HEATING CURRENTS THROUGH THE MOLTEN METAL, INSERTING A TRANSFER TUBE INTO THE MOLTEN METAL NEAR THE END OF THE TREATMENT, AND TRANSFERRING THE MOLTEN METAL FROM THE STATIONARY TREATMENT VESSEL TO A TRANFSER BY SUBJECTING THE SURFACE OF THE METAL TO A GAS UNDER A PRESSURE SUFFCIENT TO FORCE THE MOLTEN METAL UPWARDLY THROUGH THE TRANSFER TUBE EXTENDING INTO THE TRANSFER VESSEL, SAID GAS BEING NONDELETERIOUS WITH RESPECT TO THE METAL UNDERGOING TREATMENT, SAID TREATMENT VESSEL BEING MAINTAINED STATIONARY DURING TRANSFER OF THE MOLTEN METAL INTO THE TRANFER VESSEL.
Claim 3
Dependent Claim
112 words
APPARATUS FOR TREATING MOLTEN METAL, SAID APPARATUS CONSISTING OF A STATIONARY MOLTEN METAL TREATMENT VESSEL, A HOOD ADAPTED TO OVERLIE THE TREATMENT VESSEL, MEANS FOR FORMING AN AIR TIGHT SEAL BETWEEN THE TREATMENT VESSEL AND THE HOOD, MEANS FOR DRAWING A VACUUM IN THE SPACE DEFINED BY THE HOOD AND TREATMENT VESSEL, MEANS FOR ADMITTING AND EXHAUSTING A NEUTRAL GAS TO THE SPACE DEFINED BY THE HOOD AND TREATMENT VESSEL, AND A SOURCE OF INDUCTION HEATING CURRENT LOCATED IN PHYSICALLY CLOSE PROXIMITY TO THE EXTERIOR OF THE TREATMENT VESSEL WHICH THE HOOD OVERLIES, SAID TREATMENT VESSEL HAVING A PARTIALLY METALLIC WALL WITH LOW ELECTRO-MAGNETIC INTERRUPTER CHARACTERISTICS TO THEREBY REDUCE EDDY CURRENT HEATING.
Claim 4
Dependent Claim
112 words
APPARATUS FOR TREATING MOLTEN METAL, SAID APPARATUS CONSISTING OF A STATIONARY MOLTEN METAL TREATMENT VESSEL, A HOOD ADAPTED TO OVERLIE THE TREATMENT VESSEL, MEANS FOR FORMING AN AIR TIGHT SEAL BETWEEN THE TREATMENT VESSEL AND THE HOOD, MEANS FOR DRAWING A VACUUM IN THE SPACE DEFINED BY THE HOOD AND TREATMENT VESSEL, MEANS FOR ADMITTING AND EXHAUSTING A NEUTRAL GAS TO THE SPACE DEFINED BY THE HOOD AND TREATMENT VESSEL, AND A SOURCE OF INDUCTION HEATING CURRENT LOCATED IN PHYSICALLY CLOSE PROXIMITY TO THE EXTERIOR OF THE TREATMENT VESSEL WHICH THE HOOD OVERLIES, SAID TREATMENT VESSEL HAVING A PARTIALLY METALLIC WALL WITH LOW ELECTRO-MAGNETIC INTERRUPTER CHARACTERISTICS TO THEREBY REDUCE EDDY CURRENT HEATING.
Claim 5
Dependent Claim
148 words
A BODILY TRANSFERABLE EDUCTOR TUBE FOR PRESSURE POURING MOLTEN METAL FROM ONE VESSEL UPWARDLY TO A SECOND VESSEL, SAID TUBE INCLUDING A STEEL PIPE TERMINATING AT ITS UPPER END IN A FLANGE, SAID FLANGE BEING ADAPTED TO FORM A SEAL WITH THE SECOND VESSEL, AN INNER AND OUTER REFRACTORY LINING ON THE STEEL PIPE, A REPLACEABLE REFRACTORY COVER EXTENDING ABOUT THE LOWER END OF THE REFRACTORY LINED STEEL PIPE, MEANS FOR PREVENTING THE OUTER REFRACTORY LINING FROM FLOATING UPWARDLY WHEN THE TUBE IS IMMERSED IN MOLTEN METAL HAVING A HIGHER SPECIFIC GRAVITY THAN THE REFRACTORY LINING, AND A REMOVEABLE NOSE CONE COMPOSED OF A METAL COMPATIBLE WITH THE METAL WITH WHICH THE TUBE IS TO BE USED SECURED TO THE LOWER END OF THE PIPE AND REFRACTORY COATINGS, SAID CONE BEING SUFFICIENTLY THIN TO MELT IN ABOUT THE TIME NEEDED TO FORM A SEAL AT THE UPPER FLANGE.
Claim 6
Dependent Claim
148 words
A BODILY TRANSFERABLE EDUCTOR TUBE FOR PRESSURE POURING MOLTEN METAL FROM ONE VESSEL UPWARDLY TO A SECOND VESSEL, SAID TUBE INCLUDING A STEEL PIPE TERMINATING AT ITS UPPER END IN A FLANGE, SAID FLANGE BEING ADAPTED TO FORM A SEAL WITH THE SECOND VESSEL, AN INNER AND OUTER REFRACTORY LINING ON THE STEEL PIPE, A REPLACEABLE REFRACTORY COVER EXTENDING ABOUT THE LOWER END OF THE REFRACTORY LINED STEEL PIPE, MEANS FOR PREVENTING THE OUTER REFRACTORY LINING FROM FLOATING UPWARDLY WHEN THE TUBE IS IMMERSED IN MOLTEN METAL HAVING A HIGHER SPECIFIC GRAVITY THAN THE REFRACTORY LINING, AND A REMOVEABLE NOSE CONE COMPOSED OF A METAL COMPATIBLE WITH THE METAL WITH WHICH THE TUBE IS TO BE USED SECURED TO THE LOWER END OF THE PIPE AND REFRACTORY COATINGS, SAID CONE BEING SUFFICIENTLY THIN TO MELT IN ABOUT THE TIME NEEDED TO FORM A SEAL AT THE UPPER FLANGE.
References Cited (Backward Citations)
US2733912A
Cited
US1131488A
Cited
US1703739A
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US1715678A
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US2253421A
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US2929704A
Cited
US2806271A
Cited
US2792606A
Cited
US2997756A
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US2976339A
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US2947527A
Cited
US2961722A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-03-14 | 1969-09-13 | 1970-03-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-03-14 | 1973-09-13 | 1974-03-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-03-14 | 1977-09-13 | 1978-03-15 | $7700.00 | Window Closed / Lapsed |