Patent ID: 7946817

Claim:
A turbine blade, comprising: a tip shroud; one or more cooling cavities formed within the tip shroud; and a plurality of ribs formed within a first cooling cavity; wherein a first interior wall generally opposes a second interior wall across the first cooling cavity; wherein the ribs are configured such that some of the ribs originate at the first interior wall of the first cooling cavity and extend toward the second interior wall of the first cooling cavity and some of the ribs originate at the second interior wall of the first cooling cavity and extend toward the first interior wall of the first cooling cavity; wherein the ribs that originate at the first interior wall of the first cooling cavity are oriented and sized so that at least some extend across at least a majority of the distance across the first cooling cavity; and wherein the ribs that originate at the second interior wall of the first cooling cavity are oriented and sized so that at least some extend across at least a majority of the distance across the first cooling cavity.