Patent ID: 7334991

Claim:
A turbine blade, comprising: a generally elongated blade having a leading edge, a trailing edge, a tip section at a first end, a root coupled to the blade at an end generally opposite the first end for supporting the blade and for coupling the blade to a disc, and at least one cavity forming a cooling system in the blade; a plurality of elongated tip cooling chambers forming a portion of the cooling system and positioned in the tip section proximate to an outer end of the tip section, wherein each of the elongated tip cooling chambers includes openings in a pressure sidewall for exhausting cooling fluids from the cooling system in the blade; wherein the elongated tip cooling chambers each comprise a plurality of parallel, linear ribs extending from the pressure sidewall toward a suction sidewall forming parallel flow cooling channels for directing cooling fluids and enhancing the cooling capabilities of the turbine blade by acting as a heat transfer rib; and a cooling fluid orifice extending between the at least one cavity and each of the elongated tip cooling chambers, wherein each of the elongated tip cooling chambers includes the cooling fluid orifice that spans each of the parallel, linear ribs in the elongated tip cooling chamber and is in fluid communication with each of the parallel flow cooling channels in the elongated tip cooling chamber for providing a uniform cooling fluid flow through the elongated tip cooling chamber from proximate a suction sidewall to the pressure sidewall.