A device for preventing unwanted opening of a locked enclosure includes a lock bolt moveable between a locked position and an unlocked position. A face gear is meshable with and rotatable by the worm gear between locking and unlocking positions when the worm gear is driven in the first and second directions, respectively. A blocker member is rotatable between first and second positions. A biasing member is operatively coupled to the face gear and the blocker member to bias the blocker member in a biasing direction. A sliding member selectively disengages the blocker member to allow the blocker member to rotate in the biasing direction. A lever arm is operatively coupled to the sliding member such that the lever arm is in the disengaged and engageable positions when the sliding member engages the blocker member in the first and second positions, respectively.

A device for preventing unwanted opening of a locked enclosure includes a lock bolt moveable between a locked position and an unlocked position. A face gear is meshable with and rotatable by the worm gear between locking and unlocking positions when the worm gear is driven in the first and second directions, respectively. A blocker member is rotatable between first and second positions. A biasing member is operatively coupled to the face gear and the blocker member to bias the blocker member in a biasing direction. A sliding member selectively disengages the blocker member to allow the blocker member to rotate in the biasing direction. A lever arm is operatively coupled to the sliding member such that the lever arm is in the disengaged and engageable positions when the sliding member engages the blocker member in the first and second positions, respectively.

A device for preventing unwanted opening of a locked enclosure includes a lock bolt moveable between a locked position and an unlocked position. A face gear is meshable with and rotatable by the worm gear between locking and unlocking positions when the worm gear is driven in the first and second directions, respectively. A blocker member is rotatable between first and second positions. A biasing member is operatively coupled to the face gear and the blocker member to bias the blocker member in a biasing direction. A sliding member selectively disengages the blocker member to allow the blocker member to rotate in the biasing direction. A lever arm is operatively coupled to the sliding member such that the lever arm is in the disengaged and engageable positions when the sliding member engages the blocker member in the first and second positions, respectively.

An embodiment of an electronic access control system includes an electronic access apparatus, an electronic lock, and an access control administration program. The electronic access apparatus provides a wireless power signal and a wireless digital data signal to the electronic lock. The wireless power signal can be the only source of power used by the electronic lock to actuate an electronic lock mechanism. In some embodiments, the lock mechanism includes a piezoelectric latch.

A device for preventing unwanted opening of a locked enclosure includes a lock bolt moveable between a locked position and an unlocked position. A face gear is meshable with and rotatable by the worm gear between locking and unlocking positions when the worm gear is driven in the first and second directions, respectively. A blocker member is rotatable between first and second positions. A biasing member is operatively coupled to the face gear and the blocker member to bias the blocker member in a biasing direction. A sliding member selectively disengages the blocker member to allow the blocker member to rotate in the biasing direction. A lever arm is operatively coupled to the sliding member such that the lever arm is in the disengaged and engageable positions when the sliding member engages the blocker member in the first and second positions, respectively.

An embodiment of an electronic access control system includes an electronic access apparatus, an electronic lock, and an access control administration program. The electronic access apparatus provides a wireless power signal and a wireless digital data signal to the electronic lock. The wireless power signal can be the only source of power used by the electronic lock to actuate an electronic lock mechanism. In some embodiments, the lock mechanism includes a piezoelectric latch.

An embodiment of an electronic access control system includes an electronic access apparatus, an electronic lock, and an access control administration program. The electronic access apparatus provides a wireless power signal and a wireless digital data signal to the electronic lock. The wireless power signal can be the only source of power used by the electronic lock to actuate an electronic lock mechanism. In some embodiments, the lock mechanism includes a piezoelectric latch.

An embodiment of an electronic access control system includes an electronic access apparatus, an electronic lock, and an access control administration program. The electronic access apparatus provides a wireless power signal and a wireless digital data signal to the electronic lock. The wireless power signal can be the only source of power used by the electronic lock to actuate an electronic lock mechanism. In some embodiments, the lock mechanism includes a piezoelectric latch.

A lock assembly that has a first lock state and a second lock state. The lock assembly includes a latch assembly that has a latch movable between an extended position and a retracted position, and a handle operatively coupled to the latch to move the latch between the extended position and the retracted position. The lock assembly also includes a hub that is coupled to the handle for movement therewith, a member that is operatively coupled to the handle to permit or prevent movement of the latch, and a lock element. The member is engaged with the hub to permit or prevent movement of the hub. The lock element is engaged with the member in the second lock state such that the member prevents movement of the handle, and the lock element is disengaged from the member in the first lock state such that the member permits movement of the handle.

A device for preventing unwanted opening of a locked enclosure includes a lock bolt moveable between a locked position and an unlocked position. A face gear is meshable with and rotatable by the worm gear between locking and unlocking positions when the worm gear is driven in the first and second directions, respectively. A blocker member is rotatable between first and second positions. A biasing member is operatively coupled to the face gear and the blocker member to bias the blocker member in a biasing direction. A sliding member selectively disengages the blocker member to allow the blocker member to rotate in the biasing direction. A lever arm is operatively coupled to the sliding member such that the lever arm is in the disengaged and engageable positions when the sliding member engages the blocker member in the first and second positions, respectively.