Patent ID: 7469852

Claim:
A disk section of a circular disk assembly, comprising: a bottom first face for bearing against a supporting hub of a circular disk assembly, said first face being configured to be fitted to the supporting hub; second and third faces extending from the first face; a fourth outer face; a front fifth face, said second and third faces extending from said first face to said fourth outer face, said second and third faces angled with respect to each other such that, when viewed towards the front fifth face, said second and third faces follow radial lines extending outwardly from a center of an assembled circular disk assembly; a relationship of said second and third faces with said first face being such that with said first face fitted to the supporting hub, said second and third faces follow said outwardly extending radial lines when viewed towards said front fifth face; a tapered removed portion positioned at each of i) an intersection of said second with fourth faces and ii) an intersection of said third with fourth faces, each tapered removed portion accommodating part of a retaining segment connectable to the supporting hub, an exposed face of each said tapered removed portion being angled away from the second and third faces respectively, and towards said fourth face.