초록 ▼

A concentric face gear assembly includes a first face gear having first face gear teeth and second face gear having second face gear teeth. At least one input pinion contacts both the first face gear teeth and the second face gear teeth, and at least one idler pinion contacts both the first face gea

A concentric face gear assembly includes a first face gear having first face gear teeth and second face gear having second face gear teeth. At least one input pinion contacts both the first face gear teeth and the second face gear teeth, and at least one idler pinion contacts both the first face gear teeth and the second face gear teeth. The first face gear is adapted for directly driving a rotor, but the second face gear is not adapted for directly driving a rotor. The load carried by the first face gear includes the force needed to drive the rotor. Since it does not drive a rotor, the second face gear does not comprise a web or spline attachment and is therefore lightweight. Both the first face gear and the second face gear include thrust bearings, which are located radially outwardly of the first face gear teeth and radially inwardly of the second face gear teeth. The first face gear includes a web, which is relatively thin due to the thrust bearing of the first face gear being located radially outwardly of the first face gear teeth rather than radially inwardly of the first face gear teeth.

대표청구항 ▼

[ We claim:] [1.] A split-torque transmission, comprising:a first face gear having a plurality of first face gear teeth;a second face gear having a plurality of second face gear teeth;at least one input pinion contacting both the first face gear teeth and the second face gear teeth; andat least one

[ We claim:] [1.] A split-torque transmission, comprising:a first face gear having a plurality of first face gear teeth;a second face gear having a plurality of second face gear teeth;at least one input pinion contacting both the first face gear teeth and the second face gear teeth; andat least one idler pinion contacting both the first face gear teeth and the second face gear teeth, the first face gear being adapted for directly driving a proprotor and the second face gear not being adapted for directly driving a proprotor, wherein the second face gear comprises an annular member without a web.