| 摘要 |
The safety key has a shank ( 6 ) which is provided with a plurality of control surfaces ( 7 ) for properly positioning tumblers and has a front end and a rear end ( 6 a , 6 b). At a front end ( 4 a), the rotor ( 4 ) of the associated locking cylinder ( 2 ) has at least one further control surface ( 8 ), which interacts with a further control surface ( 9 ) arranged at the rear end ( 6 b) of the shank ( 5 ). The safety key is backward compatible and is relatively difficult to copy.
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