Patent ID: 8657725

Claim:
An attack dummy, the attach dummy being convertible between a strike dummy and a grappling dummy, the attack dummy comprising, an attack object for striking or grappling, the attack object having a top portion and a bottom portion, the bottom portion defining a flat bottom surface, the attack object defining a core hole opening onto the bottom surface and extending through the bottom portion toward the top portion; a non-attack object being selected from a group consisting of a bottom portion of the strike dummy and a bottom portion of the grappling dummy, the non-attack object including a screw hole; and a core post for coupling and uncoupling the attack object to and from non-attack object, the core post including a first section, a second section, and a joint section, the joint section disposed between the first and second sections and serving to join the first and second sections, the core post defining a hollow interior space extending through the first, second, and joint sections, the first section of the core post having a shape substantially congruent with the core hole of the attack object and being disposed and affixed therein for imparting relative rigidity to the bottom portion of the attack object without imparting substantially enhanced rigidity to the top portion of the attack object, the first section including one or more vertical ridges extending radially therefrom for rotationally fixing the core post within the core hole; the joint section of the core post being disposed substantially flush with the bottom surface of the attack object, the second section of the core post extending outwardly from the bottom surface of the attack object, the second section being cylindrical and including a terminus distal from the first section, the second section including concentrically disposed screw threads for coupling and uncoupling with the screw hole of the non-attack object, the terminus of the second section defining a port hole for transferring optional weight material to or from the hollow interior space of the core post, the port hole further including an optional cap for closing the port hole; whereby, the attack dummy can be converted to either the strike dummy or the grappling dummy by reversible attachment of the attack object to the appropriate non-attack object by means of the core post.