Cylindrical primary dry cells
Abstract
Abstract CYLINDRICAL PRIMARY DRY CELL INCLUDING A CYLINDRICAL NEGATIVE ELECTRODE EMBRACING A DEPOLARIZER MASS PROVIDED WITH A CONDUCTIVE ROD SERVING AS A POSITIVE ELECTRODE, THE OUTER END OF SAID ROD PROTRUDING FROM THE CLOSURE OF THE CELL AND OPTIONALLY COVERED BY A METAL CAP, THE NEGATIVE ELECTRODE BEING A CURVED METALLIC SHEET OF ZINC OR MAGNESIUM WHOSE LONGITUDINAL EDGES DO NOT MEET, THE OUTER SURFACE OF SAID SHEET, EXCEPT FOR AN ANNULAR ZONE, BEARING A SYNTHETIC NON-CONDUCTIVE CASING MOLDED THEREON AND FILLING THE SPACE BETWEEN SAID EDGES AND WHICH ALSO SERVES AS A BOTTOM CLOSURE FOR SUCH CELL, A PLASTIC COVER MOUNTED IN THE OPEN END OF SAID CURVED METALLIC SHEET AND BEING SEALING PRESSED AGAINST THE INNER WALL OF SAID SHEET IN THE REGION OF ITS UNCOATED ZONE BY A METAL RING OF SUBSTANTIAL L-SHAPED HALF-SECTION MOUNTED THEREON AND WHOSE DIAMETER IS REDUCED AFTER MOUNTING, THE COVER ALSO HAVING AN ESCAPE VALVE ARRANGEMENT FOR GASES EVOLVED DURING USE OF THE CELL.
Inventors
- 👤 Jean Firmin Jammet
- 👤 Francois Michel Joyeux
Bibliographic Details
Claims Analysis
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