Patent ID: 7513743

Claim:
A turbine blade comprising: an airfoil including an airfoil outer wall extending radially outwardly from a blade root; a blade tip surface located at an end of said airfoil distal from said root, and including pressure and suction sides joined together at chordally spaced apart leading and trailing edges of said airfoil; a squealer tip rail extending radially outwardly from said blade tip surface and comprising a pressure side tip rail and suction side tip rail, and said squealer tip rail including an aft portion formed as a continuation of said suction side tip rail and extending between said leading edge and said trailing edge adjacent said trailing edge; said aft portion continuously traversing said blade tip surface from said suction side toward said pressure side and back toward said suction side; and wherein said pressure side tip rail is discontinued in the chordal location of said aft portion.