Please see the page “Linkage Designs” for animations of the linkage designs developed by students in my graduate mechanism synthesis class.
This is the first assignment in my graduate mechanism synthesis class. It is supposed to be a flower with petals that open and close guided by a four-bar linkage. I did not realize that the shape I gave them for the petals would look so scary, but maybe it is appropriate for Halloween. This design was developed by Hsuan-Chen Wan.