United Technologies Corporation

Michael K Turkington

Stephen Douglas Murray

Delwyn E Norton

Brandon W Spangler

James Thompson Beals

Bryan P Dube

Steven J Bullied

John Joseph Marcin

Carl R Verner

Mark F Bartholomew

Keith A Santeler

John J Marcin

Jacob A Snyder

Reade R Clemens

Samuel D Draper

Lea D Kennard

Jose A Lopes

Maria Arceo Herring

Donald D Schofield

Richard L Ritchie

Stephen D Murray

Jacob B Snyder

A wax or similar material may be molded to a base plate of an investment casting shelling fixture. The molding may provide for enhanced positioning of wax patterns or may provide a precise surface shape for the shell.

Investment casting

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 core element.

Investment casting core methods

An apparatus for shelling an investment casting pattern has a tank containing a coating material. There are means for holding the pattern immersed in the coating material. There may be means for vibrating the pattern during immersion of the pattern and a vacuum source coupled to the tank to withdraw air from at least one headspace of the tank.

Shelling apparatus and methods for investment casting

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 element.

Investment casting cores

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Manchester, CT, United States of America

Michael K Turkington