Patent ID: 6145360
Filing Date: 2000-11-14
Classification: B21J

Abstract:
A rivet setting device comprising:an electric drive motor,at least one rivet setting means driven by said drive motor,at least one rechargeable battery for supplying power to said drive motor, anda circuit for controlling the power supply to said drive motor, said circuit comprising:a voltmeter for determining a voltage value of the battery, anda comparator for comparing the determined voltage value with a minimum voltage value of the battery which is stored in a storage means of said circuit, wherein when said minimum voltage value is not reached before a rivet setting operation of said rivet setting means is performed the power supply to said drive motor can be interrupted with said circuit, and further wherein when said minimum voltage value is not reached during a rivet setting operation the power supply to said drive motor can be interrupted after the rivet setting operation has been completed.