Patent ID: 9003925
Filing Date: 2015-04-14
Classification: B60K,F16H,Y10T

Abstract:
1. A ring gear assembly, comprising: a hub having a central wall, the central wall defining a first cavity and second cavity on opposing sides of the central wall, the hub including first and second end caps; first and second inner hubs configured to be fixed to first and second shafts arranged within the ring gear assembly for rotation therewith; first and second clutch packs received within the first and second cavities, respectively, the first and second clutch packs each having a first plurality of friction plates fixed for rotation to the first and second inner hubs, the first and second clutch packs each having a second plurality of friction plates fixed for rotation to the hub; a first bearing disposed radially between the first inner hub and the first end cap, and a second bearing disposed radially between the second inner hub and the second end cap; a first expansion assembly and a second expansion assembly, the first and second expansion assemblies configured to transfer an axial load to the first and second clutch packs to selectively engage the first and second friction plates together, wherein the expansion assemblies include a ball ramp supported on a ball ramp bearing; and a first drive motor and a second drive motor configured to selectively actuate the first and second expansion assembly, respectively.