| 摘要 |
<p>The invention concerns a driving device for opposite or counter rotating motion comprising a running rail (8) co-operating with rolling discs (7), a motor (4) powering a drive wheel (3) and a tractive element (2) characterised in that the tractive element (2) is an endless elongate element maintained in a groove of parallel rails, and to the running rail (8) which co-operates with the rolling discs (7) integral with the elongate tractive element (2), driven by the drive wheel (3) motion.</p> |
