GEARBOX Russian patent published in 2002 - IPC

FIELD: transport engineering. SUBSTANCE: proposed gearbox has housing, three-member planetary mechanism and clutches. One control clutch is installed on input shaft. Second clutch is installed on tubular shaft fitted on shaft of sun gear shaft for selective engagement with gear cluster or with separate gear freely fitted on said tubular shaft. Third is installed on shaft of sun gear for selective engagement with housing of tubular shaft. Twin four-position clutch is installed at input of three- member planetary mechanism for selective engagement with gear rim of carrier or epicyclic wheel. Clutch rim pitch is half the pitch of rims of members of three-member planetary mechanism. Two-position clutch is installed at output of three-member planetary mechanism. EFFECT: improved performance characteristics of vehicle, simplified design and control. 3 dwg