Cylinder lock has the limits as an integral part of the key to ensure full insertion within the key channel and will not allow the use of a key blank for entry

摘要

The lock, with a key channel (2), has all the limits (14,15) at the closing cylinder side and at the key side at a gap from the key tip (10') so that, on a full insertion of the key they all lie within the key channel (2). They are at the key and are also spaced from the end sides (12) of the lock cylinder (1) to define the full key insertion into the lock. The limits are an integral part of the key, and can be recesses or raised zones.