TY JOUR TI Determining location radii of gear chain pivot locus on involute sprocket wraps KW toothed chain KW involute sprocket KW location radius KW equidistant KW working profile KW back profile KW mathematical mode JO Vestnik of Don State Technical University AU Voyna, A.. AU Berezhnoy, S.. AU Kurapov, G.. PY 2014 IS 14 PB Don state technical University