Hilti Aktiengesellschaft

Walter Littmann

Stefan Tichy

Adrian Kauf

Till Cramer

John Van Taack-Trakranen

J&ouml;rg Wallaschek

Peter Alberg

A core bit for abrasive cutting including a cylindrical tube () provided at its end surface with cutting or abrasive bodies () and a cover () provided at an opposite end surface of the cylindrical tube () and secured thereto and having, along its central axis (A), a shank () to be received in a rotary power tool, with the cover () being dimensioned, with respect to a set excitation frequency, for forming a whole number of maximum amplitude oscillations of a concentric flexural oscillation, and the cylindrical tube () being dimensioned, with respect to a set excitation frequency, for forming a whole number of maximum amplitude oscillations of axial longitudinal oscillations.

Ultrasonic annular core bit

A device for operating a tool has an ultrasound adapter with an capacitive electro-acoustic transducer ( ) connected to an electrical ultrasonic frequency generator ( ) for producing ultrasonic wave for a tool ( ) driven by the device, wherein the capacitive electro-acoustic transducer ( ) is connected with a secondary winding ( ) and the ultrasonic frequency generator ( ) is connected with a primary winding ( ) of a transformer ( ).

Device with ultrasound adapter

Growing community of inventors

Munich, Georgia

Walter Littmann