Patent ID: 8262357

Claim:
A turbine blade, comprising: a generally elongated blade having a leading edge, a trailing edge, a pressure side and a suction side; a tip at a first end of said elongated blade; a root coupled to said elongated blade at a second end generally opposite said first end for supporting said elongated blade and for coupling said elongated blade to a disc; a cooling system including at least one inner cavity in said elongated blade; and wherein the cooling system further comprises: at least one elongated slot extending radially outwardly from said inner cavity, and having a direction of elongation in a chordal direction of said elongated blade; a plurality of elongated cooling holes having a first end in communication with said at least one slot and with said inner cavity proximate said suction side of said elongated blade and a second end defining a cooling orifice in said pressure side of said elongated blade, each of said elongated cooling holes defining a substantially linear axis between said first and second ends of each of said elongated cooling holes; and said elongated cooling holes being positioned so that cooling fluid passing from said cavity through said elongated cooling holes cools said tip and is discharged from said orifice on said pressure side of said elongated blade to mix with and cool hot gas before it passes over said tip.