Rechargeable electric batteries

Claim 1

IN A RECHARGEABLE BATTERY UNIT ADAPTED TO BE INTERCHANGEABLE WITH CONVENTIONAL DRY CELS FOR ENERGIZING A LOAD, SUCH AS A FLASHLIGHT: AN ELONGATED TUBULAR CASING HAVING TWO TRANSVERSE END WALLS AT ITS OPPOSITE ENDS EACH HAVING AN EXPOSED METALLIC OUTPUT END TERMINAL, A CELL AGGREGATE CONNECTED BETWEEN THE TWO END TERMINALS AND INCLUDING AT LEAST ONE RECHARGEABLE CELL COAXIALLY HELD IN ONE CASING SECTION ADJACENT ONE END WALL, A RECHARGING CIRCUIT INCLUDING RECTIFIER MEANS WITHIN THE OTHER CASING SECTION AND HAVING TWO OUTWARD PROJECTING TERMINAL PRONGS INSERTABLE INTO POWER SUPPLY SOCKET, A TRANSVERSE INPUT WALL UNDERLYING THE OTHER END WALL AND HAVING AFFIXED THERETO SAID OUTWARD TERMINAL PRONGS, SAID TUBULAR CASING ALSO ENCLOSING INSULATING MEANS FOR INSULATING ALL EXPOSED METALLIC PARTS OF SAID BATTERY UNIT FOR SUPPRESSING ELECTRIC SHOCK WHEN SAID PRONGS ENGAGE THE POWER SUPPLY, SAID ONE TRANSVERSE END WALL BEING MOVABLY SECURED TO THE ADJOINING CASING SECTION OF SAID TUBULAR CASING AND MOVABLE THEREON BETWEEN AN OUTER OUTPUT SETTING WHEREIN THE MOVABLE END WALL HAS ITS ONE END TERMINAL EXPOSED BEYOND THE END PORTIONS OF SAID TWO PRONGS AND A RETRACTED INPUT SETTING WHEREIN SAID TWO TERMINAL PRONGS PROJECT OUTWARDLY BEYOND THE EXTERIOR OF SAID MOVABLE END WALL AND SAID ONE END TERMINAL.