Is a
Patent attributes
Patent Jurisdiction
Patent Number
Date of Patent
March 1, 2016
Patent Application Number
12961720
Date Filed
December 7, 2010
Patent Citations Received
Patent Primary Examiner
Patent abstract
An investment casting process for a hollow component such as a gas turbine blade utilizing a ceramic core (10) that is cast in a flexible mold (24) using a low pressure, vibration assisted casting process. The flexible mold is cast from a master tool (14) machined from soft metal using a relatively low precision machining process, with relatively higher precision surfaces being defined by a precision formed insert (22) incorporated into the master tool. A plurality of identical flexible molds may be formed from a single master tool in order to permit the production of ceramic cores at a desired rate with a desired degree of part-to-part precision.
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