| 摘要 |
PROBLEM TO BE SOLVED: To reduce dismantling/assembling work time, and secure safety performance. SOLUTION: Thrust bearings 2 are provided on three of six nuts 1f respectively engaged with six rods 1e installed on a core 1a. They are thus held under the nuts 1f to reduce friction at the bottom of the nuts 1f, so that they can be tightened by hand. COPYRIGHT: (C)2008,JPO&INPIT
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