Device to form a passage in a wall for pipes or cables, uses a rotary tool at the end of a flexible rod which can be driven by an electric hand tool

摘要

The device (1) has a tapered head (2) which rotates about an axis A, mounted at the end of an elastically flexible rod (3) which has a coupling (6) which is fitted to an electric rotary hand tool. The rod both transmits rotary motion to the cutting head and bends to follow the trajectory of the cutting head, while simultaneously transmitting an axial force to it.