| 摘要 |
PROBLEM TO BE SOLVED: To solve a problem of a conventional book-end, when multiple books obliquely lean on the book-end, easily slipping off and deflecting and troubling a user of its alignment. SOLUTION: A rolling body with a circular cross section formed of a flexible body with a relatively high friction coefficient and an erecting wall opposed thereto are freely separably provided on a side to be acted of the book-end. COPYRIGHT: (C)2005,JPO&NCIPI
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