Safety key and locking cylinder, and locking system with such safety keys and locking cylinders
OwnerErnst Kellerinventor
Life of this patent
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Abstract
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 (6a, 6b). At a front end (4a), 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 (6b) of the shank (5). The safety key is backward compatible and is relatively difficult to copy.
Claims24
A safety key and locking cylinder, the locking cylinder having a stator and a rotor, with a front end and a rear end, and a keyway, and the safety key having a shank which is provided with a plurality of control surfaces for properly positioning tumblers and has a front end and a rear end, characterized in that, at its front end, the rotor has at least one further control surface, which interacts with a further control surface, arranged at the rear end of the shank.
Safety key for a locking cylinder, having a shank which is provided with a plurality of control surfaces for properly positioning tumblers and has a front end and a rear end, wherein the shank has at the rear end further control surfaces.
Dependencies are inferred from the claim text.