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:
May. 26, 2026
Filed:
Jun. 26, 2025
Rtx Corporation, Farmington, CT (US);
Kalpendu J. Parekh, Brookline, MA (US);
Daniel L. Carminati, Berlin, CT (US);
Rishon C. Saftler, Glastonbury, CT (US);
RTX Corporation, Farmington, CT (US);
Abstract
A turbine engine rotor has a central shaft and a disk stack having disks encircling the shaft. A first piston seal ring in a first groove in the central shaft has an outer diameter (OD) surface facing or contacting an inner diameter (ID) surface of a disk of said plurality of disks. A second piston seal ring in a second OD groove in the central shaft has an OD surface facing or contacting said ID surface of the same said disk. Holes in the central shaft are between the first groove and the second groove. An additional seal is between the first groove and the holes.