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:
Jul. 08, 2025
Filed:
Mar. 06, 2020
Raytheon Technologies Corporation, Farmington, CT (US);
Christopher W. Strock, Kennebunk, ME (US);
Kevin C Seymour, Riviera Beach, FL (US);
RTX Corporation, Farmington, CT (US);
Abstract
A turbine engine has: a first member () having a surface bearing an abradable coating, the abradable coating () being at least 90% by weight ceramic; and a second member () having a surface bearing an abrasive coating. The abrasive coating () has a metallic matrix () and a ceramic oxide abrasive () held by the metallic matrix, the first member and second member mounted for relative rotation with the abrasive coating facing or contacting the abradable coating. At least 50% by weight of the ceramic abrasive has a melting point at least 400K higher than a melting point of at least 20% by weight of the ceramic of the abradable coating.