| 摘要 |
A security apparatus for hindering unauthorised movement of a vehicle, such as a caravan, comprises an actuator (6) for raising or lowering a levelling leg (4 in Fig. 1) of the vehicle and a brace (8) for imparting motion to the actuator. The actuator (6) and brace (8) are provided with complimentary unique patterns of female and male parts (10a, 10b, 10c, 12a, 12b, 12c) for mating together such that only that motion means is able to operate the actuator. |
