Hiromi Ei1, Hiroko Hayashi2 and Kazushi Komatsu2*
1Graduate School of Science and Technology, Hirosaki University, 3 Bunkyo-cho, Hirosaki, Aomori 036-8561, Japan
2Department of Mathematics, Kochi University, 2-5-1 Akebono-cho, Kochi, Kochi 780-8520, Japan
*E-mail address: firstname.lastname@example.org
(Received April 14, 2015; Accepted March 29, 2016)
Abstract. The pop-up spinner is a pop-up card. As the completed card opens and closes, its nested frames spin. We analyze the motion of frames of the pop-up spinner, and represent by a nested epitrochoid mechanism.
Keywords: Pop-up spinner, Epitrochoid