| 摘要 |
<p>Protective sleeve comprises a special intake part which freely pivots on the sleeve. Preferred Features: The pivoting axis of the intake part is the same as the pivoting axis of the protective sleeve. The intake part is formed as a circular segment with the middle point on the pivoting axis. The intake part consists of two parallel walls (50) formed as circular segments which enclose the intake part of the sleeve and are connected by a front wall.</p> |
