| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a throwing body for a bowling lane allowing a user to throw and slide the throwing body with it in contact with a floor as the curling in a bowling lane and being usable a circulation mechanism and a circulation passage used for the conventional bowling lane as they are or usable by a slight improvement. <P>SOLUTION: This throwing body for the bowling lane has a spherical body with the same size of the bowling ball and at least in the moving on the bowling lane, has a form formed by removing a tip side part which is cut at a plane perpendicular to the radius from a prescribed position on the radius extending vertically downward from the center of the spherical body. <P>COPYRIGHT: (C)2008,JPO&INPIT |
