Patent ID: 7285052

Claim:
A rotating shaft assembly for an automatic transmission comprising: a cylindrical body member including a transitional diameter having a predetermined cross-sectional area, said body member including a central bore having a longitudinal axis and at least one annular groove wherein a fluid intaking means is formed in fluid communication with said bore, said fluid intaking means having at least one radially disposed intake port positioned at a predetermined lateral offset position relative to said longitudinal axis, said body member also including a plurality of hydraulic fluid outlet ports formed in fluid communication with said bore for discharging hydraulic fluid to lubricate components assembled thereon, said body member further including a plurality of external splines formed thereon at predetermined locations, wherein each of said splines includes a spline relief groove formed adjacent thereto, said spline relief groove having a semicircular cross-section for reducing stress concentration and providing increased shear strength to said body member; and fluid metering means installed at each end of said bore for restricting the flow of hydraulic fluid from the ends of said bore thereby increasing the flow of hydraulic fluid from said outlet ports.