Quick coupler for mounting a rotational disk

A pad conditioner disk holder assembly comprising:

• a drive means for providing rotational motion to said assembly;
• a rotational disk for attaching to a disk holder;
• said disk holder of a ring shape having a center aperture formed in a polygon, each side of said polygon being provided with a spring-loaded steel ball and a recessed slot behind each ball adapted for receiving a jutting key situated on and operated by a retractable ring attached to a travel housing, said disk holder being further provided with a planar surface for releasably engaging said rotational disk thereon by mechanical means;
• and
• a travel housing of cylindrical shape having a first end threaded for engaging said drive means and a second end in said polygon shape for intimately engaging said center aperture of said disk holder for transmitting a rotational motion of said drive means, said second end being further provided with a spring-loaded retractable ring for sliding in a longitudinal direction of said travel housing and for operating a plurality of jutting keys attached thereon such that when said second end being pushed into said center aperture of the disk holder each of said plurality of jutting keys engages one of said steel balls by pushing the balls radially inward in a locked position into a hemispherical recess provided in a flat surface of said polygon-shaped second end of the travel housing.