| 摘要 |
<p>A spring element for the formation of a spring consisting of a resilient material and having a first and a second series of holes defining a characteristic distance of the spring element. The spring element may be detachably connected to mutually movable connection means engaging into the holes. Some of the holes have a slack in relation to the connecting means. A spring comprises one or more spring elements, whereby common connecting means engage into corresponding holes of each of the spring elements. In order to achieve a stepwise progressive compliance between two sets of connecting means, the spring elements may have different characteristic distances. In a suspension system for a punching ball or the like, the punching ball is kinematically connected to movable connecting means engaging into holes of the spring element of such a spring, and stationary joining means engage into other holes of the spring elements.</p> |
