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:
Apr. 04, 2023
Filed:
Feb. 14, 2020
Applicant:
United Technologies Corporation, Farmington, CT (US);
Inventors:
Pantcho P. Stoyanov, West Hartford, CT (US);
Jonathan F. Zimmitti, Glastonbury, CT (US);
Nasr A. Shuaib, Watertown, MA (US);
Assignee:
Raytheon Technologies Corporation, Farmington, CT (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F16J 15/34 (2006.01); F04D 29/12 (2006.01); C23C 16/27 (2006.01); C23C 16/32 (2006.01); C23C 28/04 (2006.01);
U.S. Cl.
CPC ...
F04D 29/12 (2013.01); F16J 15/348 (2013.01); C23C 16/27 (2013.01); C23C 16/32 (2013.01); C23C 28/046 (2013.01); F05C 2203/0808 (2013.01); F05C 2203/0813 (2013.01);
Abstract
A seal assembly includes a housing at least partially defining a seal opening and at least partially surrounding a rotatable shaft. A carbon seal is located at least partially in the seal opening and includes a sealing surface. The rotatable shaft includes a radially facing surface that has a carbide based coating and a diamond-like carbon coating in engagement with the sealing surface on the carbon seal.