| 摘要 |
<p>The unit has a supporting unit (11) arranged oblong in an area of a cylindrical outer surface (3a), where the supporting unit is made of elastic material. The supporting unit rotates the outer surface in a circumferential direction over an angular range of more than 180 degree Celsius. The supporting unit has a variable axial height over a gradient in the circumferential direction, and is formed as a closed or open O-ring.</p> |
