Patent ID: 6845512
Filing Date: 2005-01-18
Classification: G11B

Abstract:
1. A device for holding an optical disk around a rotary shaft of a motor, comprising: a casing adapted to be fastened to said rotary shaft of said motor; and a plurality of spring-loaded radial tongue each partially extended out of said casing for engagement with a rounded inner edge of said optical disk, each of said radial tongues having a lower curved surface with a constant curvature in any imaginary contour line throughout at least one area of said lower curved surface, said constant curvature being exactly the same as the curvature of said rounded inner edge of said optical disk; whereby said lower curved surface may make contact with said rounded inner edge of said optical disk at a full contact length when said radial tongue is engaged with said rounded inner edge of said optical disk in said area of said lower curved surface.