ADJUSTABLE PLANETARY GEAR TRAIN Russian patent published in 1994 - IPC

FIELD: mechanical engineering. SUBSTANCE: planetary gear has main planetary gear train with central variable-size internally toothed wheel, mechanism to change in steps central wheel dimensions and additional planetary gear train. Variable-size central wheel is made up of n-shaped straight tooth racks forming n-gon with side L. Racks are installed in housing for translational motion. Additional planetary gear train has central internally toothed wheel and carrier which carries main and two idler pinions. Main pinions of both trains are kinematically connected. Distance r between their axes is found from equation given in invention. EFFECT: enlarged operating capabilities. 3 dwg