| 摘要 |
<p>Elastic springly element, characterized by the fact that it consists of a mainly tubular body (5), made of synthetic foam material or the like, whereby the wall of the body displays a number of hollows (9), in staggered symmetry the cross-sectional surface of which varies from practically zero at the inner wall (8) of the body (5), to a maximum value at the outer wall (7), for an unloaded body (5).</p> |
