Patent ID: 8668454

Claim:
An airfoil fillet cooling system for a turbine component comprising: an airfoil; an end wall having a flow path surface; at least one slot formed in the end wall, the at least one slot being configured such that the end wall includes a shelf that defines a portion of the end wall that overhangs the at least one slot and said shelf further defines at least a part of the flow path surface, the at least one slot further being configured such that the airfoil transitions to a portion of the end wall in a region defined by a fillet, the fillet being located below the flow path surface, the slot being open to the flow path surface of the end wall and defined by an opening between the shelf and the airfoil; at least one supply hole extending through the turbine component and between the at least one slot and a coolant source so as to permit fluid communication therebetween, the at least one supply hole being positioned such that a coolant exiting at least the supply hole impinges on the shelf.