Compound differential planetary gear assembly
AssigneeMoog Inc.
InventorLowell V. Larson
Life of this patent
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Abstract
A compound differential planetary gear assembly (50) includes a sun gear (52), a plurality of planet gears (53) engaging the sun gear, a plurality of first ring gears (54), and a plurality of second ring gears (55). Each of the second ring gears has a number of teeth that is different from the number of teeth of the first ring gears. The first and second ring gears are arranged alternately in an axial stack. Each planet gear has a constant gear-tooth cross-section along the length of the stack, with its gear teeth in meshing engagement with the teeth of the first and second ring gears. Loads transmitted between the first and second ring gears and the planets act in alternate directions along the length of the stack.
Claims9
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.
Dependencies are inferred from the claim text.