Patent US2920027A successfully refreshed from Google Patents.
US2920027A
Expired / Lapsed
US
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Electrical circuits for metal refining cells
Assignee: Chicago Dev Corp
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Filing: 1955-07-01
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Granted: 1960-01-05
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Expires: 1975-07-01
Abstract
No abstract record available.
Inventors
- 👤 Reginald S Dean
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 19:56
CPC Classifications
C; C25; C25C; C25C7/00; C25C7/005
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
148 words
IN AN ELECTRO-REFINING CELL FOR A TITANIUM-GROUP METAL, A ROTARY CATHODE ADAPTED, DURING USE, TO BE PARTIALLY IMMERSED IN A FUSED CHLORIDE ELECTROLYTE, AN ANODE OF THE METAL TO BE REFINED, A FORAMINOUS INTERMEDIATE ELECTRODE CO-EXTENSIVE WITH THE IMMERSED PORTION OF THE CATHODE, A MULTIPLICITY OF ELONGATED GRAPHITE MEMBERS SPACED FROM AND EXTENDING ACROSS THE CATHODE SURFACE NORMAL TO THE DIRECTION OF ITS MOVEMENT AND BETWEEN THE MAIN CATHODE AND THE AUXILIARY CATHODE, MEANS FOR PASSING DIRECT CURRENT SEPARATELY FROM THE ANODE TO BE REFINED TO THE ROTARY CATHODE AND FROM THE GRAPHITE MEMBERS AS AUXILIARY ANODES TO THE FORAMINOUS ELECTRODE AS AUXILIARY CATHODE, AND MEANS FOR ADJUSTING THE CURRENT IN THE SECOND CIRCUIT WITH RESPECT TO THAT IN THE FIRST CIRCUIT SO AS TO PROVIDE DURING THE OPERATION OF THE CELL AN INSTANTANEOUS OPEN CIRCUIT VOLTAGE BETWEEN THE FORAMINOUS ELECTRODE AND THE ROTARY CATHODE OF 0.01-02 VOLT.
Claim 2
Dependent Claim
148 words
IN AN ELECTRO-REFINING CELL FOR A TITANIUM-GROUP METAL, A ROTARY CATHODE ADAPTED, DURING USE, TO BE PARTIALLY IMMERSED IN A FUSED CHLORIDE ELECTROLYTE, AN ANODE OF THE METAL TO BE REFINED, A FORAMINOUS INTERMEDIATE ELECTRODE CO-EXTENSIVE WITH THE IMMERSED PORTION OF THE CATHODE, A MULTIPLICITY OF ELONGATED GRAPHITE MEMBERS SPACED FROM AND EXTENDING ACROSS THE CATHODE SURFACE NORMAL TO THE DIRECTION OF ITS MOVEMENT AND BETWEEN THE MAIN CATHODE AND THE AUXILIARY CATHODE, MEANS FOR PASSING DIRECT CURRENT SEPARATELY FROM THE ANODE TO BE REFINED TO THE ROTARY CATHODE AND FROM THE GRAPHITE MEMBERS AS AUXILIARY ANODES TO THE FORAMINOUS ELECTRODE AS AUXILIARY CATHODE, AND MEANS FOR ADJUSTING THE CURRENT IN THE SECOND CIRCUIT WITH RESPECT TO THAT IN THE FIRST CIRCUIT SO AS TO PROVIDE DURING THE OPERATION OF THE CELL AN INSTANTANEOUS OPEN CIRCUIT VOLTAGE BETWEEN THE FORAMINOUS ELECTRODE AND THE ROTARY CATHODE OF 0.01-02 VOLT.
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) | 1963-01-04 | 1963-07-06 | 1964-01-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-01-04 | 1967-07-06 | 1968-01-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-01-04 | 1971-07-06 | 1972-01-05 | $7700.00 | Window Closed / Lapsed |