Hilti Aktiengesellschaft

Alexander Buchenau

Uto Plank

Stefan Hammerstingl

Olaf Koch

Matthias Keith

Vera Nuebel

The tool holder according to the invention for a chipping hammer has a tool receptacle for receiving a tool and a tool securing device for securing the tool in the tool receptacle. The tool securing device provides a shaft having an eccentrically arranged mandrel and at least one end piece and a bar having at least one eye in which the end piece engages in a form-fitting manner. The tool securing device is pivotable into at least one first position for inserting and removing the tool and into at least one second position for securing the tool. The eye has a non-circular cross-section.

Tool holder

A portable hand-held power tool (), especially in the form of a drilling or chisel hammer, includes a drive assembly () located in the tool housing () for driving a tool spindle () along an operational axis (A), a first handle () which is rotatable around a first pivotal axis (S) by a first handle suspension (), a second handle () located on the opposite sides () of the housing which is rotatable around a second pivotal axis (S) by a second handle suspension (), and spring elements for retaining the handles () in their initial position, with the first and second handle suspensions () extending partially circumferentially about the drive assembly ().

Hand-held power tool with spring-loaded handle suspension

A hand-held power tool includes two vibration-damped handles (), two handle attachment axles () for securing the two handles () on the tool outer housing (), respectively, and extending at an angle to respective longitudinal axes () of respective handles (), each handle attachment axle being surrounded, at least in some areas, by the mounting section () of the respective handle (), a damping sleeve () formed of an elastic material and provided between the mounting section () of the respective handle () and the respective handle attachment axle (), with the damping sleeve () forming a first damping element, and a damping body () provided on a free end () of each handle () and forming a second damping element and having an extension (D) in a radial, with respect to the handle longitudinal axis, direction that is greater than a minimal radial extension (T) of the handle () at its free, second end.

Growing community of inventors

Puergen, Germany

Alexander Buchenau