TY JOUR TI Constructive exception of friction reversibility in joint manipulator KW joint connection KW manipulator KW friction reversibility KW wear-out KW wear capability KW working resource JO Actual directions of scientific researches of the XXI century: theory and practice AU Serebryanskiy, A.I. AU Abramov, V.V. AU Sviridov, V.. PY 2014 IS 2 PB FSBE Institution of Higher Education Voronezh State University of Forestry and Technologies named after G.F. Morozov