| 摘要 |
The device has a mouthpiece (6) inserted at a front side (3) of a curved or bent pipe section (2). A holding pin (11) is fixedly connected at another front side (4) of the pipe section. An admission channel (12) is incorporated in to the pin, and is immersed completely or partially inside the pipe section. A flexible hose (13) is attached at the holding pin and runs inside the pipe section, where a free end (24) of the hose is freely movable between inner walls (5) of the pipe section in a region of the mouthpiece. |
