ALEXANDRIA, Va., Feb. 19 -- United States Patent no. 12,231,863, issued on Feb. 18, was assigned to SONY GROUP Corp. (Tokyo).
"Sound output device" was invented by Takumi Endoh (Tokyo), Nobukazu Suzuki (Tokyo) and Takayoshi Seki (Tokyo).
According to the abstract* released by the U.S. Patent & Trademark Office: "A sound output device including: an actuator that outputs a driving force in response to a drive signal; a vibrating body that includes a plurality of receiving parts and is vibrated by a driving force transmitted from the actuator; a transmission plate that is provided with a plurality of pressing parts that press the plurality of receiving parts, respectively; a coil spring that applies a biasing force to the transmission plate ...