Patent ID: 7097429

Claim:
A turbine blade comprising: an airfoil, platform, shank, and dovetail integrally joined together in turn; said airfoil being hollow and including opposite pressure and suction sides extending in chord between leading and trailing edges and in span between a root at said platform and an outer tip; said shank including opposite forward and aft faces corresponding with said airfoil leading and trailing edges, and opposite first and second sides corresponding with said airfoil pressure and suction sides; said dovetail including a plurality of lobes extending axially below said forward and aft faces of said shank; and said shank further includes four lugs extending oppositely from said shank first and second sides at said shank forward and aft faces, and spaced above said dovetail lobes, with a first one of said lugs having an inverted skirt extending outwardly toward said platform to join said shank aft face.