US Patent 7955198 Circonic game

Circonic Game, a simulated indoor or outdoor basketball game, is played on a circular court outlined by three concentric circles. The outer circle acts as the court boundary and is conjoined by four smaller circles placed tangentially in a location that conforms to the four cardinal points of the compass (i.e., north, south, west and east). Four similar smaller circles are placed in a location that also conforms to four cardinal points of the compass (i.e., north, south, west and east) inside the two inner concentric circles of different radii forming a cluster of rings. A center pole in an upright position is mounted at the center of the court. Towards the top of the center pole are two primary ring baskets circumscribed by a larger circumferential ring basket supported by a transverse bar attached or welded to the rebounding center post centered in between these two primary ring baskets.