Patent ID: 8287010

Claim:
A door locking system, comprising: a door lock situated in a door, including: a lock latch, having a curved front surface and a planar rear surface, movable between a locked position, in which the lock latch is extended from the door, and an unlocked position in which the lock latch is retracted into the door, a lock latch blocking device movable between a release position, in which the lock latch blocking device is extended from the door and allows the lock latch to move from the locked position to the unlocked position, and a blocking position in which the lock latch blocking device is retracted into the door and prevents the lock latch from moving from the locked position to the unlocked position, and an actuating mechanism, coupled to the lock latch and the lock latch blocking device, to move the lock latch between the locked and unlocked positions and to move the lock latch blocking device between the release and blocking positions; a door opener, including: a lock latch receptacle space to receive the lock latch in the locked position, and an electromagnetically-actuated pivot latch, having a front edge, movable between a lock latch blocking position and a lock latch release position; an essentially planar striker plate, including: a lock latch recess, and an entry bevel extending in a door opening direction; and a spacer, located between the striker plate and the door opener, including: two sliding bevels, extending into the lock latch receptacle space and defining an unblocking recess therebetween; wherein, when the lock latch moves from the locked position to the unlocked position, the lock latch blocking device moves from the release position to the blocking position, wherein, when the door is pushed closed: the lock latch front surface slides along the entry bevel, which moves the lock latch to the unlocked position and the lock latch blocking device to the blocking position, the lock latch front surface slides over the pivot latch front edge, enters the lock latch receptacle area and moves to the locked position, and the lock latch blocking device remains outside of the lock latch receptacle area in the blocking position, supported by the pivot latch front edge, and wherein, when the pivot latch is electromagnetically released and the door is pushed open: the pivot latch moves from the lock latch blocking position to the lock latch release position, which allows the lock latch blocking device to move from the blocking position to the release position, the lock latch blocking device enters the unblocking recess, the lock latch slides over the sliding bevels, which moves the lock latch to the unlocked position and the lock latch blocking device to the blocking position, the lock latch slides over the entry bevel, clears the striker plate and moves to the locked position, and the lock latch blocking device moves to the release position.