US2790840A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Furnace, adapted particularly for electrochemical studies of molten materials at high temperatures
Assignee: Individual
•
Filing: 1955-11-15
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Granted: 1957-04-30
•
Expires: 1975-11-15
Abstract
No abstract record available.
Inventors
- 👤 Massoud T Simnad
- 👤 William E Dennis
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 13:47
CPC Classifications
H; H05; H05B; H05B6/00; H05B6/02; H05B6/22; H05B6/24; H05B6/26
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
137 words
IN COMBINATION WITH A CRUCIBLE OF MOLTEN MATERIAL INA FURNACE, A REFRACTORY HOUSING CONTAINING THE CRUCIBLE, THE HOUSING EXTENDING FROM INSIDE THE FURNACE UPWARDLY OUT OF THE FURNACE AND BEING CLOSED TO THE ATMOSPHER EXTERIORLY OF THE FURNACE, A SET OF CONTAINER PROJECTING DOWNWARDLY IN THE HOUSING, EACH CONTAINER COMPRISING AN OPENING AT ITS LOWER END THAT DIPS INTO THE CRUCIBLE BELOW THE LEVEL OF THE MOLTEN MATERIAL, THE SEVERAL CONTAINERS ENGAGING THE MOLTEN MATERIAL AT POINTS SPACED APART ALONG THE SURFACE OF THE MOLTEN MATERIAL, AS ELECTRODE IN EACH OF THE SEVERAL CONTAINERS AND AN ELECTRICAL LEAD FROM EACH OF THE ELECTRODES TO THE ATMOSPHERE EXTERIORLY FO THE FURNACE, PRESSURE-CONTROL APPARATUS OPERABLE TO VARY AND CONTROL THE PRESSURE DIFFERENTIAL OF ATMOSPHERIC PRESSURE BETWEEN THE INSIDE AND OUTSIDE OF THE CONTAINERS ABOVE THE LEVEL OF MOLTEN MATERIAL.
Claim 2
Dependent Claim
137 words
IN COMBINATION WITH A CRUCIBLE OF MOLTEN MATERIAL INA FURNACE, A REFRACTORY HOUSING CONTAINING THE CRUCIBLE, THE HOUSING EXTENDING FROM INSIDE THE FURNACE UPWARDLY OUT OF THE FURNACE AND BEING CLOSED TO THE ATMOSPHER EXTERIORLY OF THE FURNACE, A SET OF CONTAINER PROJECTING DOWNWARDLY IN THE HOUSING, EACH CONTAINER COMPRISING AN OPENING AT ITS LOWER END THAT DIPS INTO THE CRUCIBLE BELOW THE LEVEL OF THE MOLTEN MATERIAL, THE SEVERAL CONTAINERS ENGAGING THE MOLTEN MATERIAL AT POINTS SPACED APART ALONG THE SURFACE OF THE MOLTEN MATERIAL, AS ELECTRODE IN EACH OF THE SEVERAL CONTAINERS AND AN ELECTRICAL LEAD FROM EACH OF THE ELECTRODES TO THE ATMOSPHERE EXTERIORLY FO THE FURNACE, PRESSURE-CONTROL APPARATUS OPERABLE TO VARY AND CONTROL THE PRESSURE DIFFERENTIAL OF ATMOSPHERIC PRESSURE BETWEEN THE INSIDE AND OUTSIDE OF THE CONTAINERS ABOVE THE LEVEL OF MOLTEN MATERIAL.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-04-29 | 1960-10-29 | 1961-04-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-04-29 | 1964-10-29 | 1965-04-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-04-29 | 1968-10-29 | 1969-04-30 | $7700.00 | Window Closed / Lapsed |