GERÄT MIT KÜHLVORRICHTUNG

摘要

The cooling system (6) for a power tool, such as a drill, is in a housing (1) of the tool. The coolant is fed (7) at least at times from the compessed coolant supply (6) to the end of the drill bit (2). The control of the coolant delivery is through a spring (54) at a unit (4) with an end face (41) which is pressed against the working surface. As the drill bit penetrates the working surface, a contour (41) is moved to trip a valve (61) to release the coolant.