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:
Feb. 02, 2016
Filed:
Feb. 25, 2014
Siemens Energy, Inc., Orlando, FL (US);
Ching-Pang Lee, Cincinnati, OH (US);
Gm Salam Azad, Oviedo, FL (US);
Zhihong Gao, Orlando, FL (US);
Neil Hitchman, Charlotte, NC (US);
Nicholas F. Martin, Jr., York, SC (US);
David G. Sansom, Lake Wyle, SC (US);
Ramesh Subramanian, Oviedo, FL (US);
SIEMENS ENERGY, INC., Orlando, FL (US);
Abstract
Turbine and compressor casing abradable component embodiments for turbine engines, with composite grooves and vertically projecting asymmetric non-parallel walls or trapezoidal cross section ridges that reduce, redirect and/or block blade tip airflow leakage downstream into the grooves rather than from turbine blade airfoil high to low pressure sides. In some embodiments at least one angularly oriented first groove formed in the ridge plateau is adapted for angular orientation upstream a turbine blade rotation direction to resist blade tip airflow leakage and the ridges are separated by second grooves that are skewed relative to the respective ridge plateaus and the substrate that are also adapted for orientation upstream the turbine blade rotation direction to resist blade tip airflow leakage.