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James T Beals, Samuel D Draper, Jose A Lopes, Stephen D Murray, Brandon W Spangler, Michael K Turkington, Bryan P Dube, Keith A Santeler, Jacob A Snyder: Investment casting cores. United Technologies Corporation, Bachman & LaPointe P C, August 16, 2005: US06929054 (70 worldwide citation)

A sacrificial core for forming an interior space of a part includes a ceramic core element and a first core element including a refractory metal element. The ceramic core element may be molded over the first core element or molded with assembly features permitting assembly with the first core elemen ...


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James T Beals, Samuel D Draper, Jose A Lopes, Stephen D Murray, Brandon W Spangler, Michael K Turkington, Bryan P Dube, Keith A Santeler, Jacob A Snyder: Investment casting core methods. United Technologies Corporation, Bachman & LaPointe P C, September 18, 2007: US07270170 (35 worldwide citation)

A sacrificial core is used for forming an interior space of a part and includes a ceramic core element and a first core element including a refractory metal element. The ceramic core element may be molded over the first core element or molded with assembly features permitting assembly with the first ...


3
James T Beals, Dilip M Shah, Jacob Snyder, John Wiedemer: Refractory metal core. United Technologies Corporation, Bachman & LaPointe P C, July 5, 2005: US06913064 (26 worldwide citation)

A casting system for forming a gas turbine engine component is provided. The casting system, in a first embodiment, comprises a shaped refractory metal sheet having a plurality of features for forming a plurality of film cooling passages, which features are formed from refractory metal material bent ...


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James T Beals, Samuel D Draper, Jose Lopes, Stephen D Murray, Brandon W Spangler: Refractory metal core wall thickness control. United Technologies Corporation, Bachman & LaPointe, February 13, 2007: US07174945 (22 worldwide citation)

In accordance with the present invention, a casting system is provided which broadly comprises a core and a wax die spaced from said core, a refractory metal core having a first end seated within a slot in the core and a second end contacting the wax die for positioning the core relative to the wax ...


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Jacob A Snyder, James T Beals: Investment casting cores and methods. United Technologies Corporation, Bachman & LaPointe P C, November 14, 2006: US07134475 (21 worldwide citation)

An investment casting pattern is formed by forming a metallic first core element including at least one recess. The first core element is engaged to at least a mating one of an element of the die and a second core element. The recess serves to retain the first core element relative to the mating one ...


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Dilip M Shah, James T Beals, Norman Pietruska, Edward R Szela: Refractory metal backing material for weld repair. United Technologies Corporation, Bachman & LaPointe P C, June 1, 2004: US06742698 (19 worldwide citation)

The present invention relates to a method for repairing components such as blades used in turbine engines. The method comprises the steps of placing a piece of refractory metal material over an area of the component to be repaired and depositing a repair filler metal material over the piece of refra ...


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James T Beals, Joshua Persky, Dilip M Shah, Venkat Seetharaman, Sudhangshu Bose, Jacob Snyder, Keith Santeler, Carl Verner, Stephen D Murray, John Marcin, Dinesh Gupta, Daniel A Bales, Daniel Francis Paulonis, Glenn Cotnoir, John Wiedemer: Refractory metal core coatings. United Technologies Corporation, Bachman & LaPointe P C, August 18, 2009: US07575039 (17 worldwide citation)

A refractory metal core for use in a casting system has a coating for providing oxidation resistance during shell fire and protection against reaction/dissolution during casting. In a first embodiment, the coating includes at least one oxide and a silicon containing material. In a second embodiment, ...


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Carl R Verner, James T Beals, Jacob A Snyder, Stephen D Murray, Michael T Turkington: Investment casting. United Technologies Corporation, Bachman & LaPointe P C, May 15, 2007: US07216689 (15 worldwide citation)

Pre-molding of wax or similar sacrificial material over one or more cores facilitates a subsequent molding over a core assembly. Individual cores or groups thereof may be pre-molded in a wax body. One or more such wax bodies may be assembled with other bodies and/or other cores to facilitate a main ...


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Jacob A Snyder, James T Beals: Investment casting cores and methods. United Technologies Corporation, Bachman & LaPointe P C, March 9, 2010: US07673669 (14 worldwide citation)

To manufacture a casting core, one or more recesses are formed in at least one face of metallic sheetstock. After the forming, a piece is cut from the metallic sheetstock. The piece is deformed to a non-flat configuration.


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