| 摘要 |
<p>A lock is disclosed having a set of pin tumblers in the lock cylinder in addition to the lever tumblers to prevent rotation of the cylinder without a key to release the driver pins that engage the cylinder and prevent rotation. The key has pin tumbler cuts on the edge of the key. Because the pin tumblers and the related pin tumbler cuts on the edge of key can be spaced randomly along the length of the key and because the lengths of the pin tumblers and the depths of the pin tumbler cuts in the key can be random, the ability to create a duplicate key rendered substantially more difficult then a key with only lever tumbler cuts.</p> |
