| 摘要 |
A tightening device for pulling claw arms (5) with grip-hooks (1) towards a vehicle wheel's centre (8) comprises an inner bracket (30) and an outer bracket (31) which is movable relative to the inner bracket. Link arms (34, 43) or spring rods (47) are provided between the brackets (30, 31), and pull the claw arms (5) towards the vehicle wheel's centre (8) by movement of the brackets towards each other. |
