Patent ID: 6783478
Filing Date: 2004-08-31
Classification: F16H

Abstract:
A compound differential planetary gear assembly, comprising:a sun gear; a plurality of planet gears engaging said sun gear; a plurality of first ring gears engaging said planet gears, each of said first ring gears being connected to a common first member; a plurality of second ring gears engaging said planet gears, each of said second ring gears having a number of teeth different from those of said first ring gears; said first and second ring gears being arranged alternately and immediately adjacent one another and separated only be intermediate bearings in an axial stack; each planet gear having a constant gear-tooth cross-section along the length of said stack in meshing engagement with each of said first and second ring gears; whereby loads transmitted between said first and second ring gears will act in alternate directions along the length of said stack.