HYDROMECHANICAL TRANSMISSION Russian patent published in 1997 - IPC

FIELD: transport engineering; vehicle transmissions. SUBSTANCE: purpose of invention is to provide reversing without full stop of vehicle. Sleeve changing direction of movement with forward and reverse gears is arranged on primary shaft between torque converter and gearshift gear and is made in form of two-way friction hydraulically controlled sleeve. Synchronized sleeves mounted on secondary shaft and countershaft between constant mesh gears are used as gearshift sleeves. They are installed freely for rotation. EFFECT: enhanced reliability of operation. 3 dwg