| 摘要 |
<p>A skateboard truck having a cup-shaped housing with the axis thereof transverse to a mounting plate member secured adjacent the housing opening, the bottom of the housing pivotally secured thereto a trunnion supporting a transversely extending axle and wheel assembly. An annular rubber cushion fits within the cup in alignment with the axis thereof, the inner surface of the cup and the cushion being matingly configured to restrain the cushion from rotating. A member is received within the cushion, the member having diametrically opposed outwardly extending flanges received within splits within the cushion, the member being secured for rotation with the trunnion whereby the surfaces of the flanges apply circumferential compressive forces to the adjacent surfaces of the cushion during pivoting of the trunnion. Means are provided for axially varying the volume or density of the cushion whereby to vary the circumferential compressive forces resulting from pivoting of the trunnion.</p> |
