Patent ID: 7296446

Claim:
A lock assembly comprising: a casing having a proximal end; a distal end; and a receiving space defined in the casing and having two sides; a lock cylinder being mounted in the receiving space of the casing near the proximal end and having a locking bar mounted rotatably in the receiving space of the casing, wherein when the lock cylinder is locked, the locking bar is not rotated relative to the casing, and when the lock cylinder is unlocked, the locking bar is rotated relative to the casing, and the locking bar having a latching end having a through hole formed transversely in the latching end; and an active rod mounted in the through hole with two ends protruding out of the through hole; an active tube being mounted slidably in the receiving space of the casing and having a first end opposite to the latching end of the locking bar; a second end; two sides; two notches being oppositely defined on the first end of the active tube and corresponding to the active rod, and each notch having an inclined plane; a wheel being mounted rotatably in the receiving space of the casing and having a center; a hole with an inner surface formed through the center of the wheel; and multiple teeth formed around the inner surface; an active bracket being slidably mounted rotatably in the receiving space of the casing and having an outer wall; a first end abutting the second end of the active tube; a second end; a head being formed on the second end and having multiple active teeth extending on the outer wall of the active bracket and corresponding to and selectively engaging the teeth in the wheel; a non-circular mounting hole being formed axially through the active bracket; a resilient element being mounted in the receiving space of the casing and having an end pushing the active bracket to slide along the receiving space of the casing to engage the active teeth of the active bracket with the teeth in the wheel; a securing axle being mounted rotatably in the receiving space of the casing and having a threaded end extending out of the casing; an active end; and a mounting portion being formed on the securing axle near the active end and being non-circular in cross section to be mounted securely in the mounting hole of the active bracket.