sports equipment with a vertical pole, at the top end of which is mounted a spiral, and with a ball, which, by means of a sliding string is attached to the spiral.

摘要

1354024 Tethered ball apparatus ZIMMZAMM AG 20 May 1971 [26 May 1970 29 Jan 1971] 16098/71 Heading A6D Apparatus for playing a ball game of the kind including a ball 18 on a length of cord 16 the other end of which is slidable by means of a ring 14 up and down a spiral 12 at the end of a pole 10 is characterised in that the ring 14 is made of a resilient material and is substantially elliptical in cross section with the smaller axis of the ellipse lying radially of the ring. Preferably the ring is made of nylon or similar plastics material.