Patent ID: 8230772
Filing Date: 2012-07-31
Classification: F16D,Y10T

Abstract:
1. An apparatus comprising: a spindle body defining a central axis; a hydraulic motor assembly operably mounted on said spindle, at least a portion of said hydraulic motor assembly being rotatable relative to said spindle body about said central axis; and a plurality of hydraulic passages extending within said spindle body, each of said plurality of passages including an axial section and a lateral section wherein each of said axial sections is in fluid communication with the hydraulic motor assembly and defines a first centerline extending substantially parallel with said central axis and wherein each of said lateral sections has a first end in fluid communication with a corresponding one of said axial sections and an opposite second end defining a port on an outer surface of said spindle body and wherein each of said lateral sections defines a second centerline; said second centerlines being positioned in mutually parallel planes wherein each of said first centerlines and said central axis are substantially parallel with each of said mutually parallel planes.