Patent ID: 7318332

Claim:
A lock comprising: a shell, an internal sleeve mounted rotatably in the shell, a tongue mounted securely on the front end of the internal sleeve, and at least one locking rod assembly mounted in the internal sleeve; wherein the shell has an internal wall and an annular protruding part formed on the internal wall of the shell, and the annular protruding part has a front end with multiple protrusions formed separately thereon, and multiple gaps formed between the protrusions, the protrusions of the shell being separated from the internal wall of the shell; wherein the internal sleeve has a front end extending out of the shell and a rear end with a central hole formed therethrough; wherein each one of the at least one locking rod assemblies has multiple locking rods respectively and slidably mounted in the internal sleeve, multiple locking rods respectively mounted in the gaps of the shell, and a biasing ring mounted around the outside surfaces of the locking rods; and wherein each of the at least one locking rods has a front end, an outside surface, an inside surface, a cut formed in the front end of the locking rod and selectively aligning with the protrusions of the shell, and a protruding rod formed on the inner surface of the locking rod.