Patent ID: 7175386

Claim:
A turbine blade comprising: a platform and an airfoil extending outwardly of said platform, said airfoil having a curve with a leading edge and a trailing edge, and a pressure wall and a suction wall spaced from each other and connecting said leading and trailing edges; a cooling chamber formed between said suction and pressure walls and adjacent said trailing edge, said cooling chamber being generally open with said suction and pressure walls connected by pedestals in said cooling chamber, and at least some of said pedestals being non-cylindrical, said non-cylindrical pedestals have a greater dimension in a plane generally parallel to a top surface of said platform than in a dimension perpendicular to said top surface of said platform; said pedestals being arranged in an array, with a plurality of columns extending along a length of said airfoil, with the length defined in a direction from which said airfoil extends from said platform, with said plurality of columns being spaced from each other in a direction from said trailing edge towards said leading edge, and said non-cylindrical pedestals being in a plurality of said plurality of columns; and some of said pedestals being cylindrical, and other of said pedestals being non-cylindrical.