Handleable working device, in particular pressing device
Number of patents in Portfolio can not be more than 2000
United States of America Patent
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Apr 9, 2002
Grant Date -
N/A
app pub date -
Aug 17, 2000
filing date -
Aug 17, 1999
priority date (Note) -
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Abstract
A pressing device includes a pressing tool, an electric motor for driving the tool, and a rechargeable battery for supplying energy to the electric motor. A control device has a voltage comparison element that performs a voltage comparison between the battery voltage and a limit voltage. The control device generates an attention signal and/or limits activation of the electric motor if the voltage comparison element indicates that the battery voltage is equal to or less than the limit voltage. The control device includes an interval element with at least one storable interval. A load element acts upon the battery so that it generates a varying voltage curve. The interval element is activated when the load element is on and voltage comparison is made during a predetermined interval.
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