| 摘要 |
The bracket (1) has running wheels (10, 12) rotatably supported at a base plate (2) of the bracket. A rotation axis (11) is not aligned parallel with respect to another rotation axis (13), where the running wheels are rotatable around corresponding rotation axes. The running wheels are axially and relocatably supported with respect to the corresponding rotation axes. The rotation axes of the running wheels are arranged such that a bracket line cuts the rotation axes and runs perpendicular to the rotation axes. Independent claims are also included for the following: (1) an anchor group comprising a roller bracket and an anchor head (2) a guiding system comprising a retaining device. |
