Patent ID: 7240526
Filing Date: 2007-07-10
Classification: E05B,E05C,Y10T

Abstract:
1. A lock comprising: a cylinder assembly comprising a cylinder having an inner space, multiple outer pin holes and a cylinder keyhole communicating with the inner space; a cylinder plug assembly rotatably mounted in the inner space and comprising a cylinder plug rotatably mounted in the inner space and having an exterior surface; a through passage extending an entire length of the lock and defining said cylinder keyhole at a first end of the lock, said through passage defining a through hole at a second opposing end of the lock; a dummy keyhole and a cylinder plug keyhole defined coaxially completely through the cylinder plug, communicated with each other and selectively aligned with the cylinder keyhole, said dummy keyhole and said cylinder plug keyhole being in direct communication with said through passage; a locking pin assembly mounted in the cylinder and the cylinder plug and comprising multiple outer locking pins, and each of the outer locking pins being slidably held in a respective one of the outer pin holes;