| 摘要 |
<p>The inlet openings include at least one first opening (11a) and at least one second inlet opening which extend over different axial distances from the second end of the suction tube opposite to the end intended for connection to a suction device. The nozzle tube has an open first end for connecting to a suction device, and a second end with inlet openings extending through the tube wall and oriented in the axial direction of the tube. Ribs (12) in between the openings are connected to each other by a ring (13) at the second end of the tube. An independent claim is also included for a method for producing the nozzle by injection-molding a single-piece tube in a tool comprising a mold insert for forming the tube lumes, and a mold forming the inlet openings. The insert and mold are connected together to form the ring used to join together the ribs.</p> |
