| 摘要 |
<p>A portable electric power tool including a housing (10) with a connection terminal (20) for connection of a voltage supply source (22), an electric motor (14), an onboard operation control unit (16) and a radio communication device(17) for communicating tool operation and operation result data between the operation control (16) unit and a stationary data processing unit (18), and a back-up voltage accumulating device (25) arranged to keep up continuously a voltage supply to the control unit (16) and a radio communication device (17) at disconnection of the voltage supply source (22).</p> |
