| 摘要 |
<p>Air ventilation duct (70) comprising at least two consecutive tube parts (71) made of compressible synthetic material, and a tube coupling (1) for mutual coupling of the meeting ends of the tube parts, wherein the tube coupling comprises a shape-retaining insertion member (10), having an insertion direction, to be placed against the inside of a tube part, a tightening web (20) connected to the insertion member to be placed against the outside of the tube part, and closing means (40,140) for forming a tightened closure for the tightening web around the tube part.</p> |
