| 摘要 |
<p>The aid has two right-angled bars (3, 4) pointing in opposite direction and a clamping device (8) that is arranged at an angle to one of the bars, where the bars and the clamping device are arranged at a rod (1). The bar is connected with a rod part in a fixed manner and the bar is arranged at another rod part in a position variable manner. A pluggable safety unit is arranged at a pressure plate (13), and a quadratic casing (5) is guided over a quadratic cross-section of the rod.</p> |
