ALEXANDRIA, Va., Aug. 26 -- United States Patent no. 12,398,679, issued on Aug. 26, was assigned to RTX Corp. (Farmington, Conn.).
"Transmission and method for control of boost spool" was invented by Paul R. Hanrahan (Sedona, Ariz.) and Daniel B. Kupratis (Wallingford, Conn.).
According to the abstract* released by the U.S. Patent & Trademark Office: "A gas turbine engine includes a first spool associated with a primary combustor, a second spool associated with a secondary combustor, and a third spool, each spool including a compressor and a turbine mounted to a shaft. A transmission and accessory gearing are enclosed within a housing of an accessory gearbox. The transmission rotationally couples the third spool to the second spool and ac...