| 摘要 |
PROBLEM TO BE SOLVED: To increase the angle of opening of the tips of moving pieces even if the range of movement of operating arm tip portion is kept constant. SOLUTION: The winning ball pocket device has a moving piece 4B, the base portion of which is turnably supported and an operating arm 3 extended from the direction of crossing the turning surface of the moving piece 4B and the top portion 34 of which is moved forward and backward in the turning surface. The tip portion 34 of the operating arm 3 abuts against the abutment surfaces of the moving pieces 4A and 4B when moved in one direction from the original position P1 within a fixed range D and turns the moving pieces 4A and 4B in an opening direction. A protruding portion 35 protruding by a fixed amount S in the one direction is formed in the tip portion 34. COPYRIGHT: (C)2006,JPO&NCIPI
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