Profiled Key With Undercut Groove Pocket For Cylinder Lock Security

The key blade employs asymmetric profile grooves with undercut portions that create non-uniform geometry. The grooves have varying depths, angles, and positions that are not symmetric about any axis, making it difficult to replicate the profile without precise measurement and specialized tooling. This asymmetry directly increases copying difficulty while maintaining manufacturing feasibility through standard key cutting machines.

The invention transitions from two-dimensional key profiles to three-dimensional complex geometry by introducing undercut portions that extend vertically into the key blade thickness. These undercuts create pocket-like structures with lateral walls and floor surfaces, adding a vertical dimension to the profile complexity. This dimensional enhancement significantly increases the difficulty of copying while remaining manufacturable through controlled material removal processes.

The key blade profile is segmented into multiple independent groove features, each with configurable parameters including position, depth, width, undercut angle, and pocket dimensions. Each groove can be independently designed and positioned along the key blade length, allowing for combinatorial profile variations. This segmentation enables a large number of unique key profiles to be created from a有限 set of geometric primitives.

Different portions of the key blade profile can have locally optimized characteristics. Some grooves may have deep undercuts for high security, while others have shallow undercuts or none at all. The key blade can have regions with varying groove densities, depths, and configurations tailored to specific security requirements. This local differentiation allows for nuanced profile design that balances security with manufacturability and enables diverse profile variations.