AUTOMATIC GEAR-BOX Russian patent published in 2000 - IPC

FIELD: mechanical engineering. SUBSTANCE: automatic gear-box has drive and driven spiral gears, multidisc clutch, hydraulic cylinder body, hydraulic cylinder piston, internal drum, and bushing arranged between drum and driven spiral gear in radial direction. Bushing is coupled loosely to internal drum by means of straight-tooth slits and to drum, through spiral slits. Direction of slope of bushing slits is opposite to direction of slope of teeth of driven spiral gear. Such installation of bushing creates auxiliary axial force for multidisc clutch compression, thus reducing required pressure in hydraulic cylinder. EFFECT: enhanced efficiency. 1 dwg