US Patent 7811026 Support base for flexible marker device

A flexible marker device comprises a marker body having a bottom end and a top end, and a base for supporting the marker body. The base has an aperture in a center portion thereof and a cavity extending about the aperture in an upper surface of the base. The bottom end of the marker body is at least partially disposed within the cavity, which has a segmented cog shape. A cured material, preferably urethane, is disposed in the cavity to thereby secure the marker body to the base.