| 摘要 |
The locked condition is set both in the end setting and during key insertion by means of sequential probing in which positive elements have to be moved continuously until they permit lock closure. The elements consist of wheels or rollers which are moved during key insertion to rotate round axes normal or parallel to the key movements, and the wheels or rollers form axially separate elements whose selection and sequence combine to form different roller profiles. At least one positive element is profile-coded specific to a particular key and thus provides information on the last key used. The information can only be retrieved by the suitable key. Key and elements are controlled by a computer program which finds the coding of the lock and initiates the drilling, turning or milling needed for key and elements.
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