| 摘要 |
The support structure to act in a radial expansion action has at least one further part-structure (11) without an axial break between the ends of the tubular body. The first part-structure (1,2) can stretch at least radially, with separate radial stretch units (12,13) as rings or in a ring shape, while the second part-structure (11) is virtually rigid in the axial direction. Additionally or alternatively, both part-structures (1,2,11) are arranged so that, on a radial expansion of the tubular body, the second part-structure takes up the longitudinal axial forces. |
