Hilti Aktiengesellschaft

Franz B&uuml;chel

Thomas Sperrfechter

Gerhard Ehmig

Tilo Dittrich

Iwan Wolf

Markus Frommelt

Joachim Thieleke

Stefan B&ouml;nig

A holder for a drive piston ( ) of a setting tool, and including a return element ( ) having a first end ( ) that applies pressure to the drive piston ( ), and a second end ( ) spaced from the first end ( ), and axial and radial stop elements ( ) fixedly securable in the setting tool and against which the second end ( ) of the return element ( ) is displaceable and elastically deformed upon displacement of the drive piston ( ) in the setting direction ( ).

Holder for a drive piston of a setting tool

A piston holder for a drive piston of a setting tool and including at least one clamp member ( ) that is constantly non-rigidly pressed against a circumference of the drive piston ( ), and elements for supporting the at least one clamp member for an eccentric movement in a plane in which a central axis ( ) of the drive piston ( ) is located.

A piston holder for a drive piston ( ) of a setting tool and having a carrier ( ) for two expansion legs ( ) for frictionally receiving the drive piston ( ) therebetween, with the carrier ( ) being fixedly secured in the setting tool.

A method of controlling operation of a portable, combustion-engined tool including a combustion chamber ( ) an inlet/outlet valve ( ) of which is closed or is opened dependent on an operational phase of the tool, with the method including igniting a fuel gas mixture filling the combustion chamber ( ) for build-up of gas pressure therein and closing or opening the inlet/outlet valves ( ) dependent on the gas pressure developed in the combustion chamber ( ), and a tool in which the method is implemented.

Growing community of inventors

Ruggell, Liechtenstein

Franz Büchel

Growing community of inventors

Ruggell, Liechtenstein

Franz B&uuml;chel

Franz Büchel