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:
Mar. 31, 2026
Filed:
May. 08, 2025
Rtx Corporation, Farmington, CT (US);
Philip Andrew Varney, Coventry, CT (US);
Kevin L. Zacchera, Glastonbury, CT (US);
Ulf J. Jonsson, South Windsor, CT (US);
Sean Patrick Waters, South Windsor, CT (US);
PO Hsien Lin, West Hartford, CT (US);
RTX Corporation, Farmington, CT (US);
Abstract
A gas turbine engine includes a turbine section and a compressor section. The turbine section and the compressor section each include rotors, with a first turbine rotor driving a first compressor rotor through at least one shaft. At least one bearing compartment includes static structure and at least one bearing supports the at least one shaft for rotation about a rotational axis. A damper chamber is defined radially between an outer surface of the at least one bearing and an inner surface of the static structure. The damper chamber is defined by axially spaced seals received in seal ring grooves. A lubricant supply supplies lubricant into the damper chamber, and into the seal ring grooves. The lubricant supply includes at least one of an inner passage on an opposed radial side of the seal ring grooves relative to the damper chamber and/or an axially aligned passage directly radially outward of each of the seal ring groove or a cutout in a supporting structure supporting the at least one bearing and over a limited circumferential extent, and extending to connect the seal ring grooves.