| 主权项 |
1. A support cradle for bowling balls, the support cradle comprising a support surface adapted to maintain a bowling ball in stable position,
the support surface being carried by a frame, and the support cradle comprising additionally a connection for a compressed fluid for introducing said compressed fluid through the connection in the support cradle, and that the compressed fluid introduced in the support cradle is disposed to form a compressed-fluid cushion between the support surface and the bowling ball, thus allowing the bowling ball to turn virtually frictionless in any direction,wherein
the support cradle comprises a bottom cup disposed to join the support surface substantially tightly, the support surface being shaped as a spherical belt, and that the spherical belt of the support surface adopts a shape that substantially corresponds to the geometry of the spherical surface of the bowling ball, so that the support surface and the bowling ball fitted on this are disposed to form together a substantially impervious joint, the bottom cup being lowered relative to the spherical belt of the support surface, so that the connection is placed within the lowered bottom cup to allow the bowling ball to turn by means of a momentary regulation of the compressed-fluid flow. |
