ALEXANDRIA, Va., March 31 -- United States Patent no. 12,589,863, issued on March 31, was assigned to HAYMATT LLC (Phoenix).
"Sound-reducing rotor blade tracking wedge profile" was invented by Robert T. Loftus (Gilbert, Ariz.).
According to the abstract* released by the U.S. Patent & Trademark Office: "This invention provides a profile attachment to provide convenient airframe vibration, tracking, and acoustic improvements of a helicopter rotor blade. The profile system is designed to minimize acoustic disturbances as air passes the airfoil. The profile may be attached through an adhesive system that is permanent or that allows convenient removal and relocation for use by the helicopter manufacturer or by the helicopter operator in a fiel...