A motor vehicle sliding door can be moved by a sliding movement between open and closed positions, wherein, in order to lock the sliding door in the open position, a mechanical door stop in the form of a locking latch which has a receiving region for a catch element of the sliding door is provided, and wherein the locking latch can be released by a motorized actuation device, whereby the catch element is released. In the event of failure of the motorized actuation device of the locking latch, for an intuitive unlocking and locking of the sliding door in the open position thereof may be achieved in that the locking latch has a resiliently loaded overload lever, in that the overload lever forms a lateral portion of the receiving region of the locking latch and in that, when the locking latch is locked, the overload lever can be pivoted outward when a specific pushing force of the sliding door is exceeded.

A child safety door latch system includes interchangeable pushbutton compression springs of varying tensions proportional to selected values of thumb opposition strength. A pair is selected for a predetermined age group. A pair of handles each contain one of the selected pair of compression springs and a pushbutton. A latch includes a latch compression spring and a latch slider. A master connector is coupled to the latch slider. In a locked mode, the selected pair of compression springs cooperate with the latch compression spring such that the latch protrudes from the latch sleeve, holding the door locked.

A child safety door latch system includes interchangeable pushbutton compression springs of varying tensions proportional to selected values of thumb opposition strength. A pair is selected for a predetermined age group. A pair of handles each contain one of the selected pair of compression springs and a pushbutton. A latch includes a latch compression spring and a latch slider. A master connector is coupled to the latch slider. In a locked mode, the selected pair of compression springs cooperate with the latch compression spring such that the latch protrudes from the latch sleeve, holding the door locked.

A damping device for an exit device that is configured to resist high velocity movement a latch assembly relative to a baseplate assembly. Pivotal displacement of a bell crank during typical operation of the exit device may cause a protrusion of the bell crank to exert a pulling force on control linkage element that is coupled to a connection link of a latch assembly and a spring damper element of the damper device, thereby operating the latch assembly while also generally by-passing the damping effect of the damping device. When high velocity movement is imparted on an entryway device associated with the exit device, the damper device resists high velocity movement of the latch assembly relative to the baseplate assembly, thereby at least attempting to prevent the latch assembly from moving independently of the baseplate assembly so as to prevent unlatching of a latch of the latch assembly.