Mechanical combination lock
AssigneeBorg Locks (Hk) Ltd
InventorNgai Kwong Wong
Life of this patent
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Abstract
The present application is directed to a mechanical combination lock which includes a base having a cavity, a central shaft provided inside the cavity, and a plurality of combination control units provided on the central shaft, wherein each combination control unit includes a combination disc having at least three combination regions that correspond respectively to different combination conditions. The present application provides the mechanical combination lock whereby one button can set a combination with 2 or more bits. That means repeating characters can appear in a combination sequence. This can greatly increase the complexity of the combination sequence and can prevent cracking of the combination sequence without increasing the number of buttons on the mechanical combination lock.
Claims9
A mechanical combination lock comprising a base having a cavity, a central shaft provided inside the cavity, and a plurality of combination control units provided on the central shaft, wherein each combination control unit comprises a combination disc having at least three combination regions that correspond respectively to different combination conditions;
- the combination control unit further comprises a bottom seat and a coupling member both mounted on the central shaft, first and second combination control discs being mounted on the bottom seat, and first and second return springs for the resetting of the first and second control discs respectively;
- and
- the combination disc is coupled to the coupling member, and the first combination disc and the coupling member are coupled and rotatable together.
Dependencies are inferred from the claim text.