Hilti Aktiengesellschaft

Karl Neuper

Franz Moessnang

Laurent-Sebastian Kock

Franz MÖSSNANG

A power tool has a tool holder, an electric motor, a handle, and a main switch for switching on the electric motor. The power tool executes the following control method. The main switch is scanned to see whether it has been actuated. A start inhibitor transmits a blocking signal to a motor controller if the main switch is actuated before the power tool has been connected to the power supply. An activator receives signals from a control unit separate from the electric power tool, compares the received signals with a predefined signature and transmits a release signal to the motor controller if the received signal corresponds to the predefined signature. The motor controller switches on the electric motor in response to actuation of the main switch if the start inhibitor is not transmitting a blocking signal or the activator is transmitting a release signal.

Control method for an electric power tool

A transport cart for a pneumatic chisel hammer has two wheels, a protective cage and a holder. The protective cage has a flat base, a front side, a rear side and two flat leg sides, whereby at least one of the leg sides is at an angle between 60&#xb0; and 80&#xb0; relative to the base. The holder serves to secure the chisel hammer inside the protective cage. The user can pull the transport cart when it is upright on its base. The transport cart can be securely laid on its side on one of the leg sides in order to be stowed away. The slanting of the leg side enhances the stability by lowering the center of gravity.

Growing community of inventors

Roethis, Austria

Karl Neuper