Patent ID: 8234816

Claim:
A system comprising: a motor vehicle; and a door, the door comprising: a pivot joint that is configured to be locked; an articulated arm hingedly connectable to the vehicle and pivotably supported at the pivot joint; a guide carriage displaceably guided by a guide rail and coupled to a vertical swivel pin of the pivot joint; a tie rod having a first end and a second end, the first end of the tie rod being hingedly connected to the guide carriage; an index bolt which is biased in a vertical direction by a spring; and a rotary slide having a rotary slide surface which dictates vertical movement of the index bolt between a first position in which the articulated arm and the second end of the tie rod are engaged by the index bolt so that the articulated arm and the tie rod rotate together and a second position in which the second end of the tie rod is disengaged from the index bolt so that the articulated arm pivots relative to the tie rod.