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:
Jan. 10, 2023
Filed:
Feb. 05, 2021
Raytheon Technologies Corporation, Farmington, CT (US);
Michael A. Beinor, Vernon, CT (US);
Timothy J. Castaldo, Wethersfield, CT (US);
Christopher M. Valva, Manchester, CT (US);
Nasr A. Shuaib, Watertown, MA (US);
Mitchell D. Panton, Atlanta, GA (US);
Raytheon Technologies Corporation, Farmington, CT (US);
Abstract
A turbomachine has a bearing in a bearing compartment. A first seal system isolates the bearing compartment and has: a first runner; a second runner; an inner seal encircling the first runner; and an outer seal encircling the second runner. The inner seal has a static clearance with the first runner. The outer seal has a static clearance with the second runner, greater than the inner seal static clearance. The first runner has an inner portion cantilevered inward. The second runner has an outer portion cantilevered outward.