| 摘要 |
An in-line roller skate comprises at least three running rollers (4, 5, 6, 7) disposed one behind the other in the running direction and said running rollers comprise along their periphery a rolling surface (18, 19) which extends in a curved manner in an axial cross-section and which is formed substantially symmetrical with respect to the longitudinal middle plane of the running rollers (4, 5, 6, 7), wherein the rolling surfaces (18) of at least one front running roller (4) and at least one rear running roller (7) with respect to an axis-parallel tangential plane ( tau ) to the rolling surface (18) comprise at a spaced disposition from the longitudinal middle plane ( epsilon ) a comparatively greater perpendicular spacing than the rolling surface (19) of two middle running rollers (5, 6), so that when the roller skate (1) tilts sidewards with respect to the tangential plane ( tau ) the front and/or rear running roller (4, 7) are raised from a contact surface (20) or the contact pressure of these running rollers (4, 7) on the contact surface (2) is reduced, the middle running rollers (5, 6) are disposed immediately one behind the other and their rolling surfaces (19) are identical, wherein these rolling surfaces (19) comprise in the transition region to the lateral surfaces (5s, 6s) of the running rollers (5, 6) a rounded running shoulder (5r, 6r) which in the event of a sidewards tilting of the roller skate contacts the contact surface (20).
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