Sea-water battery having improved electrode marginal insulation

Claim 1

IN A PRIMARY BATTERY ADAPTED TO BE ACTIVATED BY THE PASSAGE OF A SALINE ELECTROLYTE THERETHROUGH, IN COMBINATION, A HOUSING; AND A STACK OF SPACED-APART BI-POLAR ELECTRODES IN SAID HOUSING, SAID STACK HAVING AN INLET SIDE FOR THE INTRODUCTION OF SAID ELECTROLYTE BETWEEN SAID BIPOLAR ELECTRODES AND AN OUTLET SIDE FO R THE ESCAPE OF SAID ELECTROLYTE, EACH OF SAID ELECTRODES HAVING FIRST AND SECOND ACTIVE LAYERS OF OPPOSITE POLARITY RESPECTIVELY JUXTAPOSED WITH OPPOSITE-POLARITY LAYERS OF ADJOINING ELECTRODES, SAID FIRST LAYER CONSISTING ESSENTIALLY OF SILVER CHLORIDE, SAID SECOND LAYER HAVING A CONTINUOUS PLANAR SURFACE OPPOSITE THAT ON WHICH SAID FIRST LAYER IS DISPOSED AND CONFRONTING THE FIRST LAYER OF AN ADJACENT ELECTRODE, SAID SECOND LAYER CONSISTING ESSENTIALLY OF A MATERIAL SELECTED FROM THE GROUP CONSISTING OF MAGNESIUM AND MAGNESIUM ALLOYS, SAID FIRST LAYER OF EACH ELECTRODE TERMINATING INWARDLY OF THE SECOND LAYER THEREOF AT SAID OUTLET SIDE OF SAID STACK TO DEFINE A MARGINAL PORTION OF SAID SECOND LAYER AT SAID OUTLET SIDE, A RESPECTIVE INSULATING SHEATH ENCLOSING SAID MARGINAL PORTION AND UNDERLYING SAID CONTINUOUS PLANAR SURFACE OF SAID SECOND LAYER, SAID SHEATH HAVING ALONG SAID SURFACE AN INNER EDGE TERMINATING OUTWARDSLY OF THE CORRESPONDING OUTER EDGE OF THE JUXTABOSED FIRST LAYER OF AN ADJOINING ELECTRODE AND A RESPECTIVE FOIL OF SILVER INTERPOSED BETWEEN SAID FIRST AND SECOND LAYERS WHILE BEING COEXTENSIVE WITH SAID SECOND LAYER AND HAVING A ARGINAL PORTION ENCLOSED BY SAID SHEATH.