Patent ID: 8448443

Claim:
A gas turbine hot gas path component comprising a substantially cylindrical body having at least one circumferential row of air mixing holes adapted to supply air in a radial direction into said substantially cylindrical body of the hot gas path component, a plurality of said air mixing holes each having a thimble fixed therein and extending radially into said substantially cylindrical body of the hot gas path component, said thimble having a substantially cylindrical body defining a center opening and a shield extending axially from an interior end of said thimble at diametrically opposed upstream and downstream locations, relative to a flow direction of hot gas through said substantially cylindrical body of the hot gas path component, within and substantially parallel to an inner surface of said substantially cylindrical body of the hot gas path component at both said upstream and downstream locations; wherein said shield is spaced radially inward of said inner surface of said substantially cylindrical body of the hot gas path component; said shield not extending beyond said substantially cylindrical body of the thimble in two other diametrically opposed locations; and wherein said substantially cylindrical body of the hot gas path component is provided with plural cooling holes directly overlying said shield at said upstream and downstream locations.