US Patent 7484332 Door comprising a locking device

The invention relates to a door comprising a leaf that is movable between an open position and a closed position, a guiding element which is fixed to the door leaf, interacts with a guide rail, and directs the movement of the door leaf, and a locking device that is movable between a released position in which said locking device releases movement of the door leaf and a locked position in which said locking device counteracts movement of the door leaf. The locking device is provided with a locking element which stops at a contact surface of the guide rail when said locking device is moved into the locked position.