US2958641A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Anode for alumina reduction cells
Assignee: Reynolds Metals Co
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Filing: 1958-05-20
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Granted: 1960-11-01
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Expires: 1978-05-20
Abstract
No abstract record available.
Inventors
- 👤 Reynolds Julian Louis
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 17:09
CPC Classifications
C; C25; C25C; C25C3/00; C25C3/06; C25C3/08; C25C3/12; C25C3/125; C25C3/22
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
152 words
AN ANODE FOR ELECTROLYTIC CELLS FOR THE PRODUCTION OF ALUMINUM, COMPRISING A PACK OF PREBAKED SLABS INTERLEAVED NEAR THEIR LOWER ENDS WITH ELECTRICAL CONTACT PLATES, A CLAMPING ASSEMBLY FOR THE ANODE PACK, SAID CLAMPING ASSEMBLY SUPPORTING SAID PLATES INDEPENDENTLY OF THE SLABS WHEN THE CLAMPING PRESURE IS RELEASED, A VERTICALLY MOVABLE FRAME, MEANS FOR SUPPORTING THE CLAMPING ASSEMBLY FROM SAID MOVABLE FRAME, MEANS FOR SUPPORTING THE SLABS INDEPENDENTLY OF THE FIRST-NAMED SUPPORTING MEANS WHEN THE CLAMPING PRESSURE IS RELEASED, MEANS FOR RAISING AND LOWERING THE CLAMPING ASSEMBLY RELATIVE TO THE MOVABLE FRAME, AND MEANS FOR RAISING AND LOWERING THE MOVABLE FRAME, BY VIRTUE OF ALL OF WHICH THE SLABS AND CONTACT PLATES CAN BE RAISED AND LOWERED AS A UNIT WHEN CLAMPING PRESSURE IS APPLIED AND THE CONTACT PLATES CAN BE RAISED INDEPENDENTLY OF THE SLABS WHEN THE SLABS ARE HELD BY THEIR INDEPENDENT SUPPORTING MEANS AND THE CLAMPING PRESSURE IS RELEASED.
Claim 2
Dependent Claim
152 words
AN ANODE FOR ELECTROLYTIC CELLS FOR THE PRODUCTION OF ALUMINUM, COMPRISING A PACK OF PREBAKED SLABS INTERLEAVED NEAR THEIR LOWER ENDS WITH ELECTRICAL CONTACT PLATES, A CLAMPING ASSEMBLY FOR THE ANODE PACK, SAID CLAMPING ASSEMBLY SUPPORTING SAID PLATES INDEPENDENTLY OF THE SLABS WHEN THE CLAMPING PRESURE IS RELEASED, A VERTICALLY MOVABLE FRAME, MEANS FOR SUPPORTING THE CLAMPING ASSEMBLY FROM SAID MOVABLE FRAME, MEANS FOR SUPPORTING THE SLABS INDEPENDENTLY OF THE FIRST-NAMED SUPPORTING MEANS WHEN THE CLAMPING PRESSURE IS RELEASED, MEANS FOR RAISING AND LOWERING THE CLAMPING ASSEMBLY RELATIVE TO THE MOVABLE FRAME, AND MEANS FOR RAISING AND LOWERING THE MOVABLE FRAME, BY VIRTUE OF ALL OF WHICH THE SLABS AND CONTACT PLATES CAN BE RAISED AND LOWERED AS A UNIT WHEN CLAMPING PRESSURE IS APPLIED AND THE CONTACT PLATES CAN BE RAISED INDEPENDENTLY OF THE SLABS WHEN THE SLABS ARE HELD BY THEIR INDEPENDENT SUPPORTING MEANS AND THE CLAMPING PRESSURE IS RELEASED.
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) | 1963-11-01 | 1964-05-02 | 1964-11-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-11-01 | 1968-05-02 | 1968-11-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-11-01 | 1972-05-02 | 1972-11-01 | $7700.00 | Window Closed / Lapsed |