| 摘要 |
<p>The rollerblade shoe has two swing sets of wheels (13,14), each secured by a screw bolt through the swivel mounting (8) to screw them to the wheel plates (12). The wheel half-sections (9,10,15,16) swing against each other. The spring (4) is tensed by a setting screw (3). A screw bolt is passed through the drilled halves (6) of both plates, to give the same lower limit for the wheels.</p> |
