Hospital beds are equipped with two essential drives: one for adjusting the height of the entire bed and another for tilting the foot section. In reality, such systems often use spindle drives.
The example shows a conceptual kinematic design for a truck tailgate lift or lift gate, as a linkage (degrees of freedom =2), driven by two hydraulic cylinders.
Example for the design of a mechanism for a flush-mounted retractable door handle with separate kinematic syntheses for the two partial systems (two syntheses “in series”).