ALEXANDRIA, Va., May 12 -- United States Patent no. 12,627,921, issued on May 12, was assigned to Glass Acoustic Innovations Co. Ltd. (New Taipei City, Taiwan).
"Passive radiator with adjustable working frequency" was invented by Kwun-Kit Chan (New Taipei, Taiwan) and Chi-Chou Ho (New Taipel, Taiwan).
According to the abstract* released by the U.S. Patent & Trademark Office: "A passive radiator with adjustable working frequency, which includes a chassis, a vibrating plate movably coupled to the chassis by a suspension component, and an added weight device arranged outside the vibrating plate. The added weight device is replaceable to adjust the working frequency of the passive radiator."
The patent was filed on Nov. 12, 2023, under Appli...