| 摘要 |
<P>PROBLEM TO BE SOLVED: To solve a problem wherein a direction of a caster is not determined and the caster is directed to an unexpected direction. Ž<P>SOLUTION: A radial bearing support shaft is provided in a direction perpendicular to a vertical main shaft of the caster, and a radial bearing is inserted to it. Load is supported by one radial bearing. By providing a bottom type part in a linear advancement direction of a caster receiving part and fitting the radial bearing in it, the caster having dynamic linear advancement property is provided. Ž<P>COPYRIGHT: (C)2010,JPO&INPIT Ž
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