| 摘要 |
PROBLEM TO BE SOLVED: To solve a problem wherein an advanced technique is required in production and adjustment, because an elastic function is mainly required intensively while a cross section with a maximum bulged part of a tooth as an apex is a dog leg-shaped reinforcing shape, and a problem wherein maintenance such repair accompanying an increase of teeth is desired to be simplified and to get easy in technical aspect, as the maintenance is very difficult in structural aspect. SOLUTION: Contact faces contacting with the tooth are formed in both ends of the maintenance device, the both ends are connected by a plate to wrap an adjacent contact face of the tooth in, and a groove is provided from a position other than the contact faces. COPYRIGHT: (C)2011,JPO&INPIT
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