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

Claim 10:
11. The security device according to claim 10
wherein the first arm blade is a disk-shaped structure;
wherein the first arm blade further comprises a first arm blade toothed structure;
wherein the first arm blade toothed structure is series of ridges and grooves that are formed in the lateral face of the disk structure of the first arm blade;
wherein the specific structure of the ridges and grooves that form the first arm blade toothed structure are individualized to the first arm blade such that the structure of the first arm blade toothed structure is different from the structure of the second arm blade toothed structure;
wherein the specific structure of the ridges and grooves that form the first arm blade toothed structure are individualized to the first arm blade such that the structure of the first 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 first arm blade toothed structure are individualized to the first arm blade such that the structure of the first 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 first arm blade toothed structure of any second instantiation of the key structure.