Linkage that signs your name

Yang Liu has developed Bezier linkages that trace trigonometric Bezier curves.  In this video he shows that he can design these linkages to draw his name in cursive.

This is a demonstration of the colloquial description of Kempe’s Universality Theorem, which says “there is a linkage that signs your name,” described by William Thurston.  See the article by Joseph Malkevitch.

Our Chinese colleagues can see this video on YouKu at the link:
Linkage signs your name