| 摘要 |
<p>An engine is immobilised by covering its sparking-plug with a lock comprising a housing 1, a member 2, which is rotatably-mounted inside the housing 1 and provided with an opening for receiving the upper portion of the sparking-plug 13, a collar 3 which is permanently fixed under the plug hexagon and on to which the rotary member 2 may be threaded, and a locking mechanism 4, 5, 6, 7, 8, 9, 10, 12, which is operable so that, the part 2 may be coupled to the outer housing 1 for threading or unthreading on to collar 3, or may be decoupled from it to prevent removal. <IMAGE></p> |
