Fluid reaction surfaces (i.e. – impellers) – Specific blade structure – Coating – specific composition or characteristic
Reissue Patent
2006-10-03
2006-10-03
Look, Edward K. (Department: 3745)
Fluid reaction surfaces (i.e., impellers)
Specific blade structure
Coating, specific composition or characteristic
C416S24100B, C416S095000, C415S177000
Reissue Patent
active
RE039320
ABSTRACT:
An airfoil having extended life due to reduction in stresses. The stresses are reduced by extending the thermal barrier coating below the radius between the outer band perimeter and the inner flow path surfaces and tapering the coating thickness. This additional tapered thermal barrier coating reduces the temperature gradient across a region already having high mechanical stresses resulting from geometric considerations thereby lowering thermally-induced stresses so that low cycle fatigue life is improved.
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Nichols Glenn H.
Tressler Judd Dodge
Andes William Scott
Armstrong Teasdale LLP
Edgar Richard A.
General Electric Company
Look Edward K.
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