Patent ID: 7681695

Claim:
A method of modernizing a car door system of an elevator car, wherein the original car door system includes at least one car door leaf, an original door drive with a crank gear and a drive linkage displacing the car door leaf, the drive linkage including a crank rod and an adjusting element, the crank rod coupled to the crank gear and to the adjusting element, the adjusting element coupled to the door leaf and pivotable about an axis, the adjusting element configured to be pivoted by movement of the crank rod, and a car door/shaft door coupling actuated by the adjusting element of the drive linkage, wherein movement of the crank rod selectively causes the adjusting element to contact the car door/shaft door coupling, the method comprising the steps of: a. demounting the original door drive together with the crank gear and the crank rod of the drive linkage; b. mounting a new door drive with a linearly moved drive means; and c. mounting an actuating device for actuating the car door/shaft door coupling, the actuating device including a transmission element being operatively connected to a pivot lever moved by the linearly moved drive means or by a control cam, and the original adjusting element being configured to be activated by the transmission element, wherein movement of the transmission element selectively causes the adjusting element to operate the car door/shaft door coupling.