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Clever keys / keys

Clever keys
Clever keys

The ring of ordinary key is hard to use, it is unnecessary to use it now. In this design two of the keys just
need to align with each other and then easily linked. Unless aligning to the gap,they will not be separated.

University

Hubei University of Technology

Hubei University of Technology
Wuhan, China

Jun Liu,
Hubei University of Technology