Patent ID: 8147194

Claim:
A turbine engine component, comprising: a shaft having a first end coupled to a turbine of a turbine engine and a second end including a spline section for coupling to a driven component, the shaft further including an axial section forming a portion of a main passage having a substantially uniform diameter, the axial section having a first end, a second end, and a center located substantially halfway between the first end and the second end of the axial section; a first set of hollow radial plates extending radially outwardly from the shaft at a first axial location between the center of the axial section and the first end of the axial section, each hollow radial plate of the first set of hollow radial plates being hollow and having an interior surface defining a first set of annular chambers surrounding and in flow communication with the main passage; and a second set of hollow radial plates extending radially outwardly from the shaft at a second axial location between the center of the axial section and the second end of the axial section, each hollow radial plate of the second set of hollow radial plates having an interior surface defining a second set of annular chambers surrounding and in flow communication with the main passage, wherein the shaft and the first and second sets of hollow radial plates are integrally formed as a single structure.