| 摘要 |
A strong flexible lightweight sling for lifting and propelling a bowling ball avoids the necessity for drilling finger grip openings in the ball and allows any bowler to bowl successfully with any ball. The annular body portion of the sling is adapted to completely surround a bowling ball snugly in a region below the maximum diameter plane of the ball and to have its diameter adjusted for convenient application to the ball and safe lifting and propelling without slippage. Flexible finger grip loops are employed to swing and release the bowling bowl with precision and to accomplish the girth adjustment of the sling body on the ball.
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