| 摘要 |
The radially directed vanes (13) has longitudinal edges (15) turned towards the hose interior (14) and components (16) for maintaining engagement with the hose interior. The engagement components are formed along the whole or parts of the vane longitudinal edges, and have the shape of projecting protuberances (17) engaging with the interior of the filter hose (5). The protuberances are sawtooth-like barbs (17), are equal in size or at least some of them extend further than the rest, inclined in the direction of the filter house open end (11). The vanes cross each other and are assembled or made in one piece with one another. They are essentially flat and relatively thin components of plastic or similar recyclable material. Through recesses (18) are provided in the vanes. |
