摘要 |
<p>The device (2) has a set of front and rear support arms (5a, 5b) including respective proximal ends that are arranged over a periphery of a base body (4). Distant ends of the arms are provided with a set of rollers (6) such that a part of the rollers is driven, where a drive pivots the arms. The base body is bendable in a middle section (7) of the device and/or includes a front joint socket (10a) such that a front section (7a) of the body with the front support arms is pivotable in relation to a rear section (7b) of the base body with the rear support arms.</p> |