ALEXANDRIA, Va., Jan. 20 -- United States Patent no. 12,532,119, issued on Jan. 20, was assigned to ALPS ALPINE Co. LTD. (Tokyo).
"Speaker and acoustic device using speaker" was invented by Ryo Ito (Fukushima, Japan).
According to the abstract* released by the U.S. Patent & Trademark Office: "In a frame, a diaphragm and an edge member are provided on a first side, and a magnetic driving portion having a magnetic circuit and a voice coil is provided on the second side. An edge support member is interposed between the edge accepting portion of the frame and the outer circumference fixing portion of the edge member. Part of the edge support member is a restricting portion extending toward the center of the frame. The restricting surface of t...