| 摘要 |
A security device comprises a base plate 2 which may be bolted to the ground and to which is pivoted at 11 a loop 6 contained within a recess 3, and a cover 1 screwed by security screws to base 2: an additional weld 5 may add strength. In use the loop of the device, which is strong enough to be driven over, is used to anchor e.g. a motor cycle to a garage floor or drive. |
