Abstract: An air hockey tabletop assembly comprising at least two segments, each defining a respective portion of an air hockey playing surface, the assembly being configurable between: an assembled state wherein the segments are joined and supported by a table so as to define the playing surface; and a disassembled state wherein each segment is removable from the table.

Abstract: A configurable butt for a cue stick comprising a body comprising an elongate chamber having an internal thread and a movable weight coaxially located within the elongate chamber and having an external thread, the movable weight being threadingly coupled to the internal thread of the elongate chamber. An internal shaft extends through the movable weight is adapted to rotate the movable weight within the internally threaded chamber thereby causing the movable weight to move between respective ends of the elongate chamber by virtue of the threaded coupling for adjusting a centre of gravity of the cue stick. An indicator arrangement is coupled to the internal shaft and adapted to provide an indicate of the location of the movable weight within the elongate chamber.

Abstract: A detachable table tennis apparatus includes a playing table detachably mounted on a table, and a plurality of positioning devices mounted on the playing table to position the playing table on the table. Thus, the playing table is mounted on tables of different sizes to facilitate a user playing the table tennis. In addition, the fixing block is driven by the two movable plates to press or release the rim of the table so as to lock or unlock the playing table, so that the playing table is mounted on and detached from the table easily and rapidly. Further, the playing table is foldable when not in use to reduce the volume of the table tennis apparatus, thereby facilitating storage and transportation of the table tennis apparatus.