| 摘要 |
The sleeve (11) has a casing-like base body (12) comprising opposite ends (13, 15) and axial expanding sections (17) serially arranged between the ends. The expanding sections are formed in cone-shape and run along the base body in helicoid shape, where diameter of each expanding section increases towards one of the ends of the base body. A cone angle (C) of each section amounts to 10 degrees with respect to a longitudinal axis of the sleeve. Through-flow openings (19, 20) for a thermosetting compound (21) are provided at the base body. |
