Patent ID: 8573010

Claim:
A padlock comprising: a lock body; a shackle having a long leg and a short leg receivable in corresponding first and second shackle openings in an upper surface of the lock body and axially moveable between a retracted position and an extended position, the short leg being withdrawn from the lock body when in the extended position; a locking mechanism disposed in the lock body, the locking mechanism comprising a plurality of tumbler discs and a user operable dial configured to selectively rotate each of the plurality of tumbler discs to an unlocking orientation; and a latch assembly disposed in the lock body, the latch assembly including a rocker pivotably mounted to a post secured to the lock body, and a latch member extending from the pivotable rocker, wherein when the plurality of tumbler discs are pivoted to the unlocking orientation, the pivotable rocker is permitted to pivot from a first position to a second position to move the latch member out of locking engagement with a recess in the short shackle leg; wherein the latch assembly further comprises a torsion spring including first and second legs and a center coil portion between the first and second legs and assembled over the post, the first leg engaging an inner surface of the lock body, and the second leg engaging the rocker to bias the rocker toward the first position, wherein the rocker comprises at least one spring fastening member securing the torsion spring to a spring retaining surface of the rocker against movement away from the rocker along the post, wherein the torsion spring is secured to the rocker in an unloaded condition.