| 摘要 |
<p>The device (13) has two heads (14, 15) including front-sided and rear-sided effective surfaces (18-21) that are movable to each other and connected by joints (16, 17) i.e. multi-joints. Arms (22, 23) i.e. lever arms, introduce effective forces. The effective surfaces are connected in series arrangement such that the rear-sided effective surface (19) of the head (14) is connected immovably with the front-sided effective surface (20) of the head (15) by a connection element. The connection element is arranged coaxially to an axis of one joint.</p> |
