| 摘要 |
Skate (10) fitted with one or more rigid, circular tubular rings (11) having a constant internal cross section, mounted either singly or in pairs on a platform (20) on which one foot or both feet (21) can rest, housing a number of continuously circulating balls (12) that come in contact with the ground through an aperture (15) on the longitudinal underside of said rings (11). |
