公开(公告)号：US20190314207A1

公开(公告)日：2019-10-17

申请号：US16313495

申请日：2017-06-29

Applicant: 3M INNOVATIVE PROPERTIES COMPANY

Inventor： Van Cuong Bui ,  Anton J. Hjalmarsson ,  Roger Kihlberg ,  Yossi Sivilia ,  Sahar Fisch ,  Semion Dorfman ,  Guy Shmuel Melamed ,  Beylem Cindoglu ,  Abir Nagia ,  Yuchun He

IPC: A61F11/14 ,  H04R1/10

Abstract: A method of retrofitting a hearing protector with an active communication device. The method has steps of providing a hearing protector, providing the active communication device and retaining the active communication device at the hearing protector. Further, a hearing protector is provided having two generally dome-shaped earmuffs, an active communication device comprising a loudspeaker and electronic circuitry which comprises a wireless communication interface, and wherein the active communication device has a mounting ring that is retained between an outer shell and a cushioning of the earmuff.