Here is a Sketch of a Prosthetic Leg with multiple Joints, Slider Connections, and Revolute Connections To mOdel the functioning of a real leg as close to possible. Below is a video that showcases the maneuverability of the model.
Here is another Cad Model design of a foot-pump mechanized hand Sanitizer, which has a series of levers starting from the bottom that are coupled in order to press down on a hand sanitizer bottle, which rests on the upper platform.
