Patent ID: 8904833

Claim:
A lock comprising: a shackle having a first portion, a second portion and a curved portion which is connected between the first and second portions, the first portion being shorter than the second portion, the second portion having a groove defined outside thereof; a body having a first hole and a second hole, the first portion located in the first hole and the second portion located in the second hole; a passage defined in the body, extending to an outer surface of the body and perpendicularly communicating with the second hole; and a positioning unit located in the passage and having a securing member, a pin and a resilient member, the securing member having a path defined therethrough and being located at an opening of the passage, the pin having a narrowed section extending from a first end thereof, the narrowed section inserted in the path of the securing member, the resilient member biasing a second end of the pin, the pin engaged with the groove, when the pin being moved to compress the resilient member, the pin is removed from the groove and the narrowed section is located corresponding to the groove so as to allow the second portion to be removed from the second hole.