Robert Bosch

Christian Hermes

Joachim Schadow

Siegfried Keusch

Manfred Kirn

David Matzo

Ernst Kraenzler

Ernst Dreher

Joerg Dehde

Joerg Moessner

Klaus Klingenstein

Gerd Hahn

Joerg Ullrich

Karl Garatwa

The chain tension of a motorized chainsaw ( ) with a housing ( ), a sprocket ( ) mounted thereon, and a blade ( ) that is aligned with this sprocket, which blade protrudes beyond the housing ( ) and guides a saw chain ( ) engaged with the sprocket ( ) in a revolving manner, where the blade ( ) is mounted such that it can be adjusted by means of longitudinal displacement in relation to the housing ( ) and/or the sprocket ( ) by means of a chain tensioning device ( ) and where the chain tensioning device ( ) has a stop ( ) that can be fixed to the blade ( ) and a cam ( ) that can be rotated by means of a rotational member ( ) can be adjusted in a more comfortable and reliable fashion by virtue of the fact that the cam ( ) can be locked in a form-fitting and rotationally secure manner in relation to the housing ( ) by way of the rotational member ( ).

Chain saw

Manual machine tool with tool holder and appropriate tool

Growing community of inventors

Sebnitz, Germany

Christian Hermes