Patent ID: 8171760
Filing Date: 2012-05-08
Classification: E05B,Y10T

Abstract:
1. A padlock comprising: a casing; a first lock including a key hole and the first lock disposed within the casing; a driving device, wherein a portion of the driving device is movably disposed within the key hole; and an indication device being able to be moved together with the driving device, wherein the indication device is alternatively moved between a first position and a second position, wherein the first position is the position where the entirety of the indication device is stored within the casing and the second position is the position where the indication device moves a distance out of the casing; wherein when a key is inserted into the key hole of the first lock, the key forces the driving device to move along the key inserting direction and push the indication device to move the distance out of the casing and protrude out of a top surface of the casing along the key inserting direction without any rotation of the key, wherein a portion of the indication device is exposed by the casing such that the portion of the indication device is visible from outside the casing.