GEARBOX Russian patent published in 1994 - IPC

FIELD: road-building machines. SUBSTANCE: fitted on sun gear drive shaft 7 is tubular shaft 9 on which three gears 10, 11, 12 are installed for sliding. Two gears are combined into cluster. These gears are engaged with similar gears 3, 4 and 6 of primary shaft 2, and cluster is turned to other side. One additional clutch is arranged on tubular shaft 7 between separate gear and gear cluster, other clutch is fitted on tubular shaft hub at planetary gear side. Owing to increase in gearbox range and possibility of selection of optimum gear ratio, fuel consumption is reduced which makes it possible to operate engine under conditions providing minimum fuel consumption and reduced emission of harmful matter. EFFECT: reduced fuel consumption, enhanced environmental protection. 4 dwg