| 摘要 |
PCT No. PCT/SE94/00904 Sec. 371 Date Mar. 21, 1996 Sec. 102(e) Date Mar. 21, 1996 PCT Filed Oct. 3, 1994 PCT Pub. No. WO95/09749 PCT Pub. Date Apr. 13, 1995The invention relates to a device (1) for preventing unauthorized use of an engine provided with a spark plug, from which the ignition cable has been removed and conditions have been provided which will enable the spark plug to be covered and therewith made irremovable, or at least not readily removable. The device includes a sleeve (6) which can be fitted over a spark plug (2) to which no ignition cable is connected, and a spark-plug coacting locking part (4, 5). The sleeve (6) and the locking part can be locked in a position relative to one another or in a position in which they are able to move relative to one another, through the medium of a locking device (7). The locking part (4, 5) which coacts with the spark plug (2) can be moved relative to the sleeve (6) in a direction pertinent to a sleeve center line (6a), from a position in which it is located outside the sleeve and in which the spark plug (2) is exposed or can be embraced by the sleeve, to a position inside the sleeve (6) in which the spark plug is embraced and in which the locking part (4, 5) is able to rotate freely around the cylindrical base part (2a) of the enclosed spark plug.
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