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US3783024A Expired / Lapsed US ⏱️ 0.0 years remaining

Electric cells and batteries

Assignee: British Railways Board
•
Filing: 1971-11-23
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Granted: 1974-01-01
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Expires: 1991-11-23
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Abstract

Abstract AN ELECTRIC CELL OF THE KIND WHICH, AT ITS OPERATING TEMPERATURE, HAS LIQUID ALKALI METAL AS NEGATIVE ACTIVE MATERIAL (ANODE), LIQUID SULPHUR MATERIAL AS POSITIVE ACTIVE MATERIAL (CATHODE), AND A SOLID ELECTROLYTE SEPARATING ANODE AND CATHODE COMPARTMENTS. ELECTRODES OF THE CELL CONSTITUTE WALL PORTIONS, FOR EXAMPLE END PLATES. OF THE ANODE AND CATHODE COMPARTMENTS RESPECTIVELY AND ARE FLEXIBLE TO ACCOMMODATE CHANGES IN VOLUME OF THE MATERIALS IN SAID COMPARTMENTS DURING DISCHARGE OF THE CELL. AN ELECTRIC BATTERY IS FORMED BY A PLURALITY OF THE CELLS STACKED TOGETHER END TO END WITH THE CELLS ELECTRICALLY IN SERIES IN WHICH CASE A SINGLE ELECTRODE MAY BE DISPOSED BETWEEN ADJACENT CELLS TO CONSTITUTE AN END PLATE FOR BOTH SAID ADJACENT CELLS.

Inventors

  • 👤 J Gibson
  • 👤 R Holland

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-11-01 21:58
CPC Classifications
H; H01; H01M; H01M10/00; H01M10/36; H01M10/39; H01M10/3909; Y; Y02; Y02E; Y02E60/00; Y02E60/10; Y02P; Y02P70/00; Y02P70/50

Claims Analysis

Total Claims: 0
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References Cited (Backward Citations)

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USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1976-12-31 1977-07-02 1978-01-01 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1980-12-31 1981-07-02 1982-01-01 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1984-12-31 1985-07-02 1986-01-01 $7700.00 Window Closed / Lapsed

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