Patent ID: 7948359

Claim:
An electronic padlock comprising: a lock housing; a shackle movably coupled to the lock housing for vertical movement between a locked condition and a withdrawn condition; a blocker disposed within the lock housing, the blocker being vertically movable from a shackle securing position, in which the blocker forces at least one shackle engagement member into locking engagement with the shackle, to a shackle releasing position, in which the blocker allows the at least one shackle engagement member to disengage from the shackle for withdrawal of the shackle from the lock housing; a motor disposed within the lock housing, the motor being configured to move a displacement member into engagement with the blocker for vertical movement of the blocker from the shackle securing position to the shackle releasing position in response to receipt of an electrical signal, the motor being further configured to move the displacement member out of engagement with the blocker to allow the blocker to move from the shackle releasing position to the shackle securing position; a lock biasing member disposed within the housing for biasing the blocker toward the shackle securing position, such that when the motor moves the displacement member out of engagement with the blocker, the lock biasing member returns the blocker to the shackle securing position; and an electronic lock interface assembled with the lock housing and configured to supply an electrical signal to the motor in response to receipt of an authorized signal.