Kinetostatic analysis of a scissor jack mechanism powered by a tetrad RRR-Ta-RRR Victor Moise, Ileana Dugaesescu, Lucretia Popa, Liviu Ungureanu and Ştefan-Iulian Moise E3S Web Conf., 180 (2020) 03025 Published online: 24 July 2020 DOI: 10.1051/e3sconf/202018003025