Patent ID: 8347527

Claim:
A shoe sole comprising: anti-slipping elements which include radially projecting guide cams, a central actuation unit for moving the anti-slipping elements between an inactive position and an active position, individual functional units supporting the respective anti-slipping elements, a flexible drive element operatively coupled with the central actuation unit and the individual functional units for axially moving the flexible drive elements between the active and inactive positions through rotation caused by the central actuation unit, a housing shaped as a shallow pot associated with each functional unit, a spiral ramp fixed relative to the housing, a rotatably supported drive disk that cooperates with the flexible drive element and has first and second mutually diametrically opposed extensions in the form of drive wings which extend substantially perpendicular to the drive disk and engage the radially projecting guide cams of the anti-slipping elements, and free ends of the guide cams cooperating with the spiral ramp for axially moving the anti-slipping elements between the first and second positions when the flexible drive element is rotated by the central actuation unit.