Patent ID: 7448240

Claim:
A lock assembly comprising: a housing having a cylinder hole defined axially through the housing; a lock cylinder rotatably and slidably received in the cylinder hole of the housing and having a key hole, a plurality of pin slots and a holding recess, wherein the pin slots and the holding recess are communicating with the key hole of the lock cylinder; an adjusting block slidably received in the holding recess of the lock cylinder and having a wedge side facing the lock cylinder and a plurality of first wedge elements formed on the wedge side; and an adjusting assembly mounted in the lock cylinder and comprising multiple adjustable rack assemblies mounted respectively in the pin slots in the lock cylinder and each rack assembly comprising a rack element slidably mounted in one of the pin slots, being inverse U-shaped and having a supporting arm having two ends; a wedge leg and an engaging leg formed respectively on and protruding downward from the ends of the supporting arm; a second wedge element formed on the wedge leg and selectively engaging one of the first wedge elements on the adjusting block; and multiple teeth formed on the engaging leg; and an adjusting base slidably mounted in a corresponding pin slot and having multiple teeth selectively engaging the teeth on the rack element.