GEAR DRIVE Russian patent published in 1997 - IPC

FIELD: mechanical engineering. SUBSTANCE: main surfaces of gears of gear wheels have different radii of curvature of longitudinal lines of teeth selected at points of longitudinal lines located in area of engagement including central end plane symmetrically to it: radii of convex tooth are large and radii of concave tooth are lesser and vice versa at other points. EFFECT: increased loading capacity due to two-point momentary contact of teeth surfaces.