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US Patent 8070450 High temperature turbine rotor blade

Patent 8070450 was granted and assigned to Florida Turbine Technologies Inc. on December, 2011 by the United States Patent and Trademark Office.

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Patent
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Current Assignee
Florida Turbine Technologies Inc.
Florida Turbine Technologies Inc.
Patent Jurisdiction
United States Patent and Trademark Office
United States Patent and Trademark Office
Patent Number
8070450
Date of Patent
December 6, 2011
Patent Application Number
12426343
Date Filed
April 20, 2009
Patent Citations Received
‌
US Patent 11692446 Airfoil with sintered powder components
3
Patent Primary Examiner
‌
Michael Lebentritt
Patent abstract

A turbine rotor blade made from the spar and shell construction in which the shell formed from a plurality of shell segments each being a thin wall shell segment made from a high temperature resistant material that is formed by a wire EDM process, and where the shell segments are each secured to the spar separately using a retainer that is poured into retainer occupying spaces formed in the shell segments and the spar, and then hardened to form a rigid retainer to secure each shell segment to the spar individually. The spar includes a number of radial extending projections each with a row of cavities that form the retainer occupying spaces in order to spread the loads around. The retainer can be a bicast material, a transient liquid phase bonding material, or a sintered metal. An old shell can be easily removed and replaced with a new shell by removing parts of the retainer and re-pouring a new retainer with a new shell in place.

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