The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jun. 23, 2015
Filed:
Nov. 07, 2013
Ching-pang Lee, Cincinnati, OH (US);
Gerald L. Hillier, Charlottesville, VA (US);
Jae Y. Um, Winter Garden, FL (US);
GM Salam Azad, Oviedo, FL (US);
Ching-Pang Lee, Cincinnati, OH (US);
Gerald L. Hillier, Charlottesville, VA (US);
Jae Y. Um, Winter Garden, FL (US);
Gm Salam Azad, Oviedo, FL (US);
Siemens Aktiengesellschaft, München, DE;
Abstract
An investment casting method for a cast ceramic core (), including an airfoil portion () shaped to define an inner surface () of an airfoil () of a vane segment () and an integral shell portion () having a backside-shaping surface () shaped to define a backside surface () of a shroud () of the vane segment. The backside-shaping surface has a higher elevation () and a lower elevation (). The higher elevation is set apart from a nearest point () on the airfoil portion by the lower elevation. The airfoil portion and the shell portion are cast as a monolithic body during a single casting pour.