Hilti Aktiengesellschaft

Lothar Voelker

Iwan Wolf

Ulrich Schiestl

Hans Gschwend

Ulrich Rosenbaum

Kaveh Towfighi

A combustion-engined setting tool for driving fasting elements such as nails, bolts, pins in an object, includes a combustion chamber (), a fuel source (), a fuel conduit () connecting the fuel source () with combustion chamber () for feeding fuel thereinto, and at least one metering device () for metering a predetermined amount of fuel for effecting a setting process and having at least one variable volume metering chamber (), and a displaceable piston body () for a pulsed ejection of fuel from the metering chamber ().

Combustion-engined setting tool

A method of controlling operation of a portable, combustion-engined, power tool and including feeding fuel into the combustion chamber of the power tool, before ignition, several times one after another in accordance with an intermittent metering operational mode, and a power tool including a control device () for controlling operation of the fuel feeding device () of the power tool so that the feeding device () feeds the fuel into the combustion chamber () several times in accordance with the intermittent metering operational mode.

Growing community of inventors

Sax, Switzerland

Lothar Voelker