Patent ID: 7086259
Filing Date: 2006-08-08
Classification: E05B,Y10T

Abstract:
1. An anti-picking cylinder lock comprising: a lock body defining a bore for rotatably accommodating a plug, said lock body having formed therein a plurality of body pin bores; said plug rotatably disposed in said bore, said plug defining a keyway which is adapted to receive a key, said plug having formed therein a plurality of plug pin bores arranged to correspond with said plurality of body pin bores; a plurality of telescopic body pin assemblies disposed at least partially in said plurality of body pin bores, each of said telescopic body pin assemblies comprising an outer body pin and an inner body pin disposed in a bore formed in said outer body pin; and a plurality of telescopic plug pin assemblies disposed at least partially in said plurality of plug pin bores, each of said telescopic plug pin assemblies comprising an outer plug pin and an inner plug pin disposed in a bore formed in said outer plug pin, wherein at least one of said outer plug pins is formed with at least one recess configured and arranged such that, upon an attempted picking of said lock, a portion of at least one of said inner body pins tends to engage said at least one recess.