Application of tool for releasing screw connections - involves shank with left-hand orientated blades and ending in point with angle of between 90 and 120 deg. and pref. between 98 and 104 deg.

摘要

The tool has a shank with left-hand orientated blades (14) and ending in a point (16), and can be used as a screwdriver or as a cutting tool to remove connecting and fastening elements. The point has an angle of between 90 and 120 deg, and pref. between 98 and 104 deg. The two blades are symmetrical. Each of the two blades has a clearance angle of between 8 and 20 deg. and pref. 13 and 17 deg. It has a cutting angle of between 10 and 40 deg. and pref. between 13 and 18 deg.