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:
Jun. 23, 2026
Filed:
Dec. 17, 2024
Rtx Corporation, Farmington, CT (US);
Joshua Robert Seyler, Stuart, FL (US);
Parag H. Mathuria, Palm Beach Gardens, FL (US);
Lajos H. Horvath, Jupiter, FL (US);
James Masloski, Lake Worth, FL (US);
RTX Corporation, Farmington, CT (US);
Abstract
A tie bolt stretch system including a rotor assembly including a compressor section coupled with a turbine section by a curvic coupling; a tie bolt joining the compressor section to the turbine section; a stretch tool in operative communication with the tie bolt; the stretch tool comprising: a hydraulic piston in operative communication with the tie bolt, the hydraulic piston including a shaft with a predetermined dimension; a sensor in operative communication with the stretch tool, the sensor indicates a dimensional change of the predetermined dimension; and a controller in operative communication with the sensor and a servo valve fluidly coupled with a hydraulic pump; the hydraulic pump fluidly coupled with the hydraulic piston; wherein the controller is configured to operate the hydraulic piston responsive to a signal from the sensor to attain a predetermined preload stretch on the tie bolt, curvic coupling, compressor section and turbine section.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile