| 摘要 |
A bowler's aid comprising a plastic, relatively stiff shell forming a segment of a cylinder mounted on the inside of the user's arm adjacent his elbow. The shell has a sufficient stiffness to lock the bowler's elbow in a straight position during the back swing and delivery until he releases the bowling ball. The shell permits him to bend his elbow, prior to beginning his back swing, by applying a pressure with his other hand on the shell's midsection toward his elbow.
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