ALEXANDRIA, Va., Dec. 9 -- United States Patent no. 12,492,735, issued on Dec. 9, was assigned to Textron Innovations Inc. (Providence, R.I.).
"Two-mode tuned vibration absorber" was invented by Zachary Alan Lammi (Wichita, Kan.).
According to the abstract* released by the U.S. Patent & Trademark Office: "A dual-frequency vibration-reduction apparatus includes a beam having a longitudinal axis and a transverse axis perpendicular to the longitudinal axis. An attachment mechanism mechanically couples a portion of the beam to a structure. One or more masses are attached to the beam such that the apparatus vibrates bi-modally at a primary frequency and a secondary frequency for reducing vibrations of the structure at the primary frequency and...