US3322658A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Aluminum electrolytic cell and method of use
Assignee: Elektrokemisk AS
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Filing: 1963-02-28
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Granted: 1967-05-30
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Expires: 1983-02-28
Abstract
No abstract record available.
Inventors
- 👤 Mathias O Sem
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 06:42
CPC Classifications
F; F27; F27D; F27D11/00; C; C25; C25C; C25C3/00; C25C3/06; C25C3/08; C25C3/16; Y; Y02; Y02P; Y02P10/00; Y02P10/25
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
74 words
IN AN ELECTRIC FURNACE FOR THE MELT ELECTROLYSIS OF ALUMINUM OF THE TYPE IN WHICH LIQUID ALUMINUM METAL IS COLLECTED IN THE BOTTOM OF THE FURNACE BENEATH A MOLTEN CRYOLITE BATH, THE STRUCTURE WHICH COMPRISES A CONTINUOUS SELF-BAKING ANODE, CATHODE RODS THAT EXTEND DOWN THROUGH THE ANODE AND INTO THE LIQUID ALUMINUM METAL IN THE BOTTOM OF THE FURNACE AND ELECTRIC INSULATING MEANS WHICH INSULATE SAID RODS FROM THE ANODE AND MOLTEN CRYOLITE BATH.
Claim 2
Dependent Claim
74 words
IN AN ELECTRIC FURNACE FOR THE MELT ELECTROLYSIS OF ALUMINUM OF THE TYPE IN WHICH LIQUID ALUMINUM METAL IS COLLECTED IN THE BOTTOM OF THE FURNACE BENEATH A MOLTEN CRYOLITE BATH, THE STRUCTURE WHICH COMPRISES A CONTINUOUS SELF-BAKING ANODE, CATHODE RODS THAT EXTEND DOWN THROUGH THE ANODE AND INTO THE LIQUID ALUMINUM METAL IN THE BOTTOM OF THE FURNACE AND ELECTRIC INSULATING MEANS WHICH INSULATE SAID RODS FROM THE ANODE AND MOLTEN CRYOLITE BATH.
Claim 3
Dependent Claim
124 words
IN THE OPERATION OF AN ELECTROLYTIC ALUMINUM SMELTING FURNACE WHICH INCLUDES A FURNACE POT HAVING A POOL OF MOLTEN ALUMINUM ON THE BOTTOM THEREOF, A MOLTEN ELECTROLYTIC BATH WITH DISSOLVED ALUMINA THEREIN RESTING UPON SAID POOL AND A SELF-BAKING ANODE SUSPENDED ABOVE AND IN CONTACT WITH SAID BATH, THE METHOD COMPRISING SUPPLYING DIRECT ELECTRIC CURRENT TO SAID ANODE, FLOWING SAID CURRENT FROM SAID ANODE TO AND THROUGH FIRST SAID ELECTROLYTIC BATH AND THEN SAID POOL OF MOLTEN ALUMINUM, RETURNING SAID CURRENT TO ITS SOURCE ALONG A PLURALITY OF PATHS INSULATED FROM AND LEADING UP THROUGH SAID ELECTROLYTIC BATH AND THE BODY OF SAID ANODE, AND PASSING SAID RETURN FLOW OF CURRENT THROUGH EACH SAID RETURN PATH AT A DENSITY NOT EXCEEDING ABOUT 5,000 AMPERES.
Claim 4
Dependent Claim
124 words
IN THE OPERATION OF AN ELECTROLYTIC ALUMINUM SMELTING FURNACE WHICH INCLUDES A FURNACE POT HAVING A POOL OF MOLTEN ALUMINUM ON THE BOTTOM THEREOF, A MOLTEN ELECTROLYTIC BATH WITH DISSOLVED ALUMINA THEREIN RESTING UPON SAID POOL AND A SELF-BAKING ANODE SUSPENDED ABOVE AND IN CONTACT WITH SAID BATH, THE METHOD COMPRISING SUPPLYING DIRECT ELECTRIC CURRENT TO SAID ANODE, FLOWING SAID CURRENT FROM SAID ANODE TO AND THROUGH FIRST SAID ELECTROLYTIC BATH AND THEN SAID POOL OF MOLTEN ALUMINUM, RETURNING SAID CURRENT TO ITS SOURCE ALONG A PLURALITY OF PATHS INSULATED FROM AND LEADING UP THROUGH SAID ELECTROLYTIC BATH AND THE BODY OF SAID ANODE, AND PASSING SAID RETURN FLOW OF CURRENT THROUGH EACH SAID RETURN PATH AT A DENSITY NOT EXCEEDING ABOUT 5,000 AMPERES.
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) | 1970-05-29 | 1970-11-28 | 1971-05-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-05-29 | 1974-11-28 | 1975-05-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-05-29 | 1978-11-28 | 1979-05-30 | $7700.00 | Window Closed / Lapsed |