ALEXANDRIA, Va., May 5 -- United States Patent no. 12,620,378, issued on May 5, was assigned to YAMAHA Corp. (Hamamatsu, Japan).
"Keyboard unit" was invented by Akito Ohba (Hamamatsu, Japan), Hirotsugu Kamiya (Hamamatsu, Japan) and Hiroyuki Yamano (Hamamatsu, Japan).
According to the abstract* released by the U.S. Patent & Trademark Office: "A keyboard unit includes a frame; a first member connected to the frame, a rigidity of the first member in a first direction being lower than a rigidity of the first member in a second direction intersecting with the first direction; and a mounted member. The mounted member includes a first pressing portion configured to suppress a movement of the first member in the first direction by pressing a part...