Patent ID: 8827041

Claim:
A carrier car door assembly, comprising: a drive mechanism movable between a door-closed position and a door-open position; a door for a carrier car movable between a door-closed position and a door-open position; a driven mechanism connected between the drive mechanism and the door and movable between a door-closed position and a door-open position, the driven mechanism comprising: a linkage having a first end and a second end, the second end of the linkage including a first magnet; an arm pivotably connected to the first end of the linkage, the arm comprising a second magnet at an end opposite its pivotal connection with the linkage, wherein: when the driven mechanism is in a magnetic coupled state, the arm is positioned relative to the linkage such that the second magnet of the arm is aligned with and magnetically coupled with the first magnet of the linkage, and when the driven mechanism is in a magnetic de-coupled state, the arm is positioned relative to the linkage such that the second magnet of the arm is misaligned with and magnetically de-coupled with the first magnet of the linkage; wherein the door is connected to the arm such that when the driven mechanism is in the magnetic coupled state, the drive mechanism drives the driven mechanism between the door-open and door-closed positions; wherein when the driven mechanism is in the magnetic de-coupled state, the drive mechanism cannot drive the driven mechanism between the door-open and door-closed positions.