| 摘要 |
PROBLEM TO BE SOLVED: To provide ball for bowling that has been made so that one can handle the ball at will by preventing thumb from being caught when releasing the ball for bowling. SOLUTION: This is a ball for bowling that has a forefinger seizing hole 12 and a middle finger seizing hole 13 disposed at prescribed positions of a spherical body with a separation a little apart and a thumb seizing hole 14a disposed at a position that is away from the two seizing holes for the forefinger and middle finger by nearly fitting the palm length, and the thumb seizing hole 14a has a taper means 21 at the periphery of the hole in the direction excluding those of the other two holes. |
