| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide a tuning key for a drum with superior handlability, which can be used for a hexagonal or square bolt, a nut, and a hexagonal socket head bolt in a multipurpose application. <P>SOLUTION: The tuning key 10 comprises a socket wrench 14 having a socket 13 fitting to the head 12A of a clamping bolt 12 of a bass drum 11, and a L-shaped hexagonal bar spanner 15 that is fitted in perpendicular to the axis of the socket wrench 14 and used as a handle when the clamping bolt 12 is turned using the socket wrench 14. When a hexagonal socket head bolt is turned using the hexagonal bar spanner 15, the socket wrench 14 and an arm part 15A of the hexagonal bar spanner 15 are used as the handle. <P>COPYRIGHT: (C)2003,JPO</p> |
