Patent ID: 9486900
Filing Date: 2016-11-08
CPC Classification: B25B,F16B

Claim Text:
1. A screwdriver drive design for a screwdriver the engagement end of which features a form that is complementary to a fastening element drive design for a fastening element to be screwed, the fastening element drive design comprising a drive design surface formed to be complementary to at least two drive surfaces formed on the fastening element for transmission of a torque suitable for rotation with a tool in a first rotation direction and transition surfaces disposed between these drive surfaces, which form a guide surface for the tool when rotating the tool in the first rotation direction and upon engagement of the tool in the other rotation direction causes an axial outward displacement of the tool, wherein the transition surfaces are formed as outside surfaces, and wherein the transition surfaces of the fastening element drive design surface are formed as outside surfaces.