| 摘要 |
The present invention provides a system of locking the type of lock which has a cylinder constituted by a static body or barrel and by a rotatory body or core, equipped with a multiplicity of radial assemblies or key sequences. The lock contains at least one pair of tumblers mounted against a common impeller spring. The lock sequences of which each operate in relation to respective indentations formed by the tooth-like cutting of the active edge of a key blade. The cylinder for six or five key sequences all of which are spring-loaded. The key corresponding to the cylinder and having corresponding indentations. A removable plug or stop which is selectively placed or removed with respect to the opening at back, is situated farther to the rear of the channel for insertion of the key into the rotatable body or core. The position of the removable plug or stop being such as to displace a step or an amplitude of the distance between the axes of two successive key sequences.
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