ALEXANDRIA, Va., June 12 -- United States Patent no. 12,300,205, issued on May 13, was assigned to CASIO COMPUTER Co. LTD. (Tokyo).
"Rotary operation device, and electronic keyboard instrument" was invented by Hirokatsu Katoh (Kawasaki, Japan).
According to the abstract* released by the U.S. Patent & Trademark Office: "A rotary operation device according to an embodiment of the present disclosure includes: a rotation detection unit configured to detect rotation; a knob; and an accommodation unit configured to accommodate the rotation detection unit, wherein the knob includes an operation portion configured to rotate in interlock with the rotation detection unit, and a stopper portion disposed more on a radially inner side than an outer ed...