| 摘要 |
PROBLEM TO BE SOLVED: To appropriately perform a rotating motion like spinning in ice skating by excellently revolving and turning a front part revolving roller and a rear part revolving roller while frictionally revolving an intermediate turning roller disposed on the plate lower surface of a roller skate as a center (almost fixed point). SOLUTION: The intermediate turning roller 3 turned only in front and back directions is disposed at the intermediate part of a plate 2 and the front revolving roller 8 capable of being horizontally revolved to a skating surface 7 and turned at any revolving angle is disposed at the front part of the intermediate turning roller 3. Also, the rear part revolving roller 14 capable of being horizontally revolved to the skating surface 7 and turned at any revolving angle is disposed at the rear part of the intermediate turning roller 3.
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