Rivet setting device

Details Rivet setting device Rivet setting device

1999-04-16

2000-11-14

Jones, David

Metal deforming

With use of control means energized in response to activator...

Including use of sensor responsive to energy input to tool...

72449, 7245315, B21J 1528

Patent

active

061453609

ABSTRACT:
The present invention relates to a rivet setting device having an electric drive motor, at lease one rivet setting means driven by drive motor, at least one rechargeable battery for supplying power to the drive motor, and a circuit for controlling the power supply to the drive motor. To prevent situations in such rivet setting devices where the rivet setting device is blocked due to a battery voltage that is too low, the present invention provides for a circuit which comprises a voltmeter for determining a battery voltage value, and a comparator for comparing the determined battery voltage value with a minimum value of the battery voltage which is stored in a storage means of the circuit, and either when the minimum value is not reached before the performance of a rivet setting operation of the rivet setting means, the power supply can be interrupted with the circuit, or when the minimum value is not reached during a rivet setting operation, the power supply can be interrupted with the circuit after the rivet setting operation has been completed.

REFERENCES:
patent: 3127045 (1964-03-01), Tschantz
patent: 3397567 (1968-08-01), Klingler
patent: 4541266 (1985-09-01), Totsu
patent: 5056347 (1991-10-01), Wagner
patent: 5473805 (1995-12-01), Wille
patent: 5553478 (1996-09-01), Di Troia

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