| 摘要 |
The friction thrust element (20) is fitted between the sides (11) of an inline roller skate frame (10) by a sliding coupling with grooves (23) in the opposite sides (24) of the thrust element engaging with vertical projections (22) on the facing surfaces of the frame sides. The grooves and projections have a matching dovetail cross-section, and the thrust element is held in place inside the frame by a vertical screw (30) inserted through the top (12) of the frame.
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