| 摘要 |
PROBLEM TO BE SOLVED: To replace a rail body at a low cost when breakage or abrasion occurs in the rail body. SOLUTION: The rail body bearing abrasive cloth is stuck to a fitting board, and the fitting board is fitted to a door by a separable fixing means. When the rail body suffers a damage or the like, the door is opened to remove the abrasive cloth, and then the fixing means is operated to replace the fitting board and the rail. COPYRIGHT: (C)2004,JPO
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