ALEXANDRIA, Va., Aug. 20 -- United States Patent no. 12,395,797, issued on Aug. 19, was assigned to TDK Corp. (Tokyo).
"Vibration device" was invented by Akira Satoh (Tokyo) and Kaoru Kijima (Tokyo).
According to the abstract* released by the U.S. Patent & Trademark Office: "A vibration device includes: a piezoelectric unit including a piezoelectric element; and a housing made of metal that holds the piezoelectric unit. The housing includes a bottom surface portion to which the piezoelectric unit is fixed, and side surface portions that stand at an edge portion of the bottom surface portion to surround the piezoelectric unit. The side surface portions are continuous with the bottom surface portion, and are inclined to open outward from th...