| 摘要 |
PROBLEM TO BE SOLVED: To provide a ring permitting swift change of the inner diameter of the ring without taking time in putting on/taking off the ring. SOLUTION: The ring includes a pair of right and left ring divided pieces 11 and 12 of a ring-shaped member, and hinges 26 and 27 rotatably connecting one ends 11A and 12A of the pair of ring divided pieces 11 and 12 with each other, or the like. A first pair of magnets 19 and 20 whose polarities are same are mounted at the one ends 11A and 12A of the pair of ring divided pieces 11 and 12, respectively, and a second pair of magnets 28 and 29 whose polarities are different from each other are mounted at the other ends 11D and 12D of the pair of ring divided pieces 11 and 12, respectively. COPYRIGHT: (C)2010,JPO&INPIT |
