Passive door lock mechanisms

A lock mechanism for an inactive door, the lock mechanism comprising:

• a housing configured to receive a locking element from an active door lock;
• a slide movably received in the housing and comprising a drive bar connection element, wherein when the slide is in an unlocked position, the drive bar connection element is located in a path of travel of the locking element, and wherein when the slide is in a locked position, the drive bar connection element is located outside the path of travel of the locking element;
• at least one drive bar at least partially received in the housing, wherein the drive bar is connected to the drive bar connection element and wherein the drive bar is actuated by an actuator located remote from the housing;
• and
• a blocking element located within the housing, wherein the blocking element prevents movement of the slide from the locked position to the unlocked position, wherein the blocking element is pivotably connected to the housing and comprises a dog, wherein when the blocking element is in a slide blocked position, the dog is located within a path of travel of the slide, and wherein when the blocking element is in a slide unblocked position, the dog is located outside a path of travel of the slide.