Patent ID: 11905736
Assignee: nan
Field: Civil engineering (Other fields)
Classification: CPC E | IPC E

Claim 11:
12. The security device according to claim 11
wherein the second arm blade is a disk-shaped structure;
wherein the second arm blade further comprises a second arm blade toothed structure;
wherein the second arm blade toothed structure is series of ridges and grooves that are formed in the lateral face of the disk structure of the second arm blade;
wherein the specific structure of the ridges and grooves that form the second arm blade toothed structure are individualized to the second arm blade such that the structure of the second arm blade toothed structure is different from the structure of the first arm blade toothed structure;
wherein the specific structure of the ridges and grooves that form the second arm blade toothed structure are individualized to the second arm blade such that the structure of the second arm blade toothed structure is different from the structure of the master blade toothed structure;
wherein the specific structure of the ridges and grooves that form the second arm blade toothed structure are individualized to the second arm blade such that the structure of the second arm blade toothed structure of any first instantiation of the key structure is different from the specific structure of the ridges and grooves that form the second arm blade toothed structure of any second instantiation of the key structure.