公开(公告)号：WO2022074533A1

公开(公告)日：2022-04-14

申请号：PCT/IB2021/059079

申请日：2021-10-04

Applicant: 3M INNOVATIVE PROPERTIES COMPANY

Inventor： EGGERT-RICHTER, Sebastian ,  SCHNEIDER, Bernhard C. ,  WEINMANN, Christian ,  STALDER, Michael H. ,  STOLP, Lars

IPC: H04R1/10 ,  A61F11/14

Abstract: A hearing protection device is presented that includes a first earmuff and a second earmuff. The hearing protection device also includes a connector that connects the first earmuff to the second earmuff. The connector includes a first mechanical spring that connects to the first earmuff on a first spring first end and connects to the second earmuff on a first spring second end. The first mechanical spring has a length extending from the first spring first end to the first spring second end. The connector also includes a second mechanical spring that connects to the first earmuff on a second spring first end and connects to the second earmuff on a second spring second end. The first and second mechanical springs provide a biasing force urging the first and second earmuffs toward a wearer's head. The hearing protection device also includes an antenna element with an antenna length of conductive material and a feed point connecting the antenna to a receiver. The antenna element is wholly enclosed within a housing of the connector. The antenna is configured to receive a radio signal in the 87.5-280 MHz range.