Patent ID: 7686578

Claim:
A turbine blade comprising: an airfoil, platform, and integral dovetail; said airfoil including a concave pressure side and transversely opposite, convex suction side extending chordally between opposite leading and trailing edges and extending in span from root to tip; said airfoil tip including transversely opposite first and second ribs extending outwardly from a common tip floor, and integrally joined together at said leading and trailing edges to conform with said pressure and suction sides, respectively; and a tip baffle extending chordally aft between said leading and trailing edges and nested transversely between said first and second ribs in a unitary metal casting therewith to bifurcate said airfoil tip into first and second tip pockets bounded by said first and second ribs, respectively, with said baffle being convex toward and conforming with said second rib, and said second pocket extending aft of said first pocket along said first rib.