ALEXANDRIA, Va., July 15 -- United States Patent no. 12,663,071, issued on June 23, was assigned to Textron Innovations Inc. (Providence, R.I.).
"Remote gearbox lubricant level gauge system for rotorcraft" was invented by Nathaniel Ross Bernklau (Keller, Texas) and Charles Eric Covington (Colleyville, Texas).
According to the abstract* released by the U.S. Patent & Trademark Office: "An aircraft is described and includes an aircraft body, a gearbox housing containing a lubricant, and a remote gearbox lubricant level gauging (RGLLG) system including a light source that when activated illuminates an interior of the gearbox housing; at least one light tube for transmitting light from inside the gearbox housing to an observer end of the RGLLG...