ALEXANDRIA, Va., July 15 -- United States Patent no. 12,666,212, issued on June 23, was assigned to Sonos Inc. (Goleta, Calif.).
"Variable stiffness diaphragm for a playback device" was invented by Wei Yang (Boston) and Charles LaColla (Woodland Hills, Calif.).
According to the abstract* released by the U.S. Patent & Trademark Office: "A diaphragm for an audio transducer includes an annular body defining a central aperture, a first surface of the body extending between a radially inner edge adjacent the aperture and a radially outer edge, and a second surface of the body opposite the first surface, the second surface extending between the radially inner edge and the radially outer edge. Along a first azimuthal direction, the body has a fi...