Hilti Aktiengesellschaft

Thorsten Sauer

Norbert Welte

Uwe Gerold

Tilo Dittrich

Norbert Heeb

The invention relates to a method for operating a hand-held working device (), which comprises a data acquisition unit () in which actuations of the trigger switch and accelerations of the working device () are captured. In order to further simplify and/or improve the operation of the hand-held working device, it is monitored within a limited period of time after actuation of the trigger switch whether an acceleration of the working device () exceeds an acceleration threshold in order to detect trouble-free ignitions and/or ignition problems during the operation of the working device ().

Method for operating a hand-held working device

A combustion-operated setting tool () for driving-in fastening elements includes a setting piston () displaceable in a guide cylinder (), a combustion chamber (), a fuel inlet () opening into the combustion chamber () for feeding fuel therein and an ignition element () for igniting the fuel in the combustion chamber (). Both, the fuel inlet () and the ignition element (), are located at the first end () of the combustion chamber () adjacent to the guide cylinder (), and a motor-driven ventilator () supported on a rear wall () of the combustion chamber () at the second end () of the combustion chamber () remote from the guide cylinder ().

Combustion-operated setting tool

The invention relates to a work apparatus for setting fastening elements in a substrate, with a fuel container and with a dosing device, through which the fuel is fed from the fuel container into a combustion chamber in which a flammable mixture is ignited, for setting a fastening element, and with a temperature sensor. In order to prevent undesired malfunctioning in the operation of the work apparatus or to reduce the incidence of such malfunctioning, the work apparatus comprises a container temperature sensor and a dosing temperature sensor.

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Goefis, Austria

Thorsten Sauer