Patent ID: 6843153

Claim:
A driving tool in combination with a predetermined security screw, the predetermined security screw comprising: a threaded shank portion; and a head portion, wherein the head portion has a circular profile about an axis of the threaded shank portion and a substantially dome-shaped smooth exposed surface without any tool engagement slots, and the substantially dome-shaped smooth exposed surface is symmetrically disposed about a longitudinal axis of the threaded shank portion; and the driving tool comprising: a shank portion adapted to be rotated by a suitable implement; and a head engaging portion incorporating a friction drive surface that is symmetrically disposed about the longitudinal axis of the shank portion, wherein the friction drive surface is configured to fit against the substantially dome-shaped smooth exposed surface of the predetermined security screw so as to provide a friction drive between the head engaging portion and the predetermined security screw when the driving tool is rotated by the suitable implement.