Patent 9398364 was granted and assigned to Bose Corporation on July, 2016 by the United States Patent and Trademark Office.
An earpiece with structure for positioning and retaining the earpiece and with structure for sealing against the entrance to the ear canal to provide passive noise attenuation. The positioning and retaining structure engages features of the lateral surface of the ear. The structure for sealing against the entrance to the ear canal includes a conical structure.