Patent ID: 8056378

Claim:
A rekeyable lock cylinder comprising: a cylinder body having a hollow cylinder portion; a plug disposed within the hollow cylinder portion of the cylinder body and having an outside wall, a trench recessed from the outside wall, a plurality of lower pin holes and a plurality of rack component runners communicating with the trench and the lower pin holes; an adjusting block disposed within the trench of the plug and having an arc sidewall, a plurality of leading slots corresponding to the rack component runners and a position groove recessed from the arc sidewall, the position groove has a notch portion and a groove inner portion communicating with the notch portion, wherein a depth of the groove inner portion is larger than a depth of the notch portion; and a plurality of rack component assemblies, each of them comprising a first rack component disposed at the rack component runner of the plug and a second rack component capable of engaging with the first rack component, wherein each of the first rack components has a rib portion located at the leading slot of the adjusting block.