| 摘要 |
Combination door lock 10 having a control mechanism with automatic cancellation which is fastened inside the lock case 11 and which is equipped with hook fingers loaded by a spring and engaging in one or more combination discs 19 when these discs are aligned in a predetermined position in which a return cam 25 comes into mechanical connection with a bolt-return lever 22. Once the bolt 12 is returned by this lever 22, these hook fingers engage in an associated combination disc and displace it out of its predetermined position into a random position, thereby scrambling or automatically cancelling the combination or the location of the discs. It is consequently impossible to predict the exact position of the combination discs after the return of the bolt and the opening of the door. <IMAGE> |
