公开(公告)号：WO2021205282A1

公开(公告)日：2021-10-14

申请号：PCT/IB2021/052587

申请日：2021-03-29

Applicant: 3M INNOVATIVE PROPERTIES COMPANY

Inventor： EGGERT-RICHTER, Sebastian ,  SCHNEIDER, Bernhard C. ,  HANSSON, Olof N. ,  WEINMANN, Christian ,  STALDER, Michael H.

IPC: H04R1/10 ,  H01Q1/36 ,  H01Q9/16 ,  H04R5/033 ,  A61F11/14 ,  H01Q1/27 ,  H01Q11/08

Abstract: A hearing protection device is provided. The hearing protection device includes a first earmuff connected to a second earmuff by a connector. Each of the first and second earmuffs are configured to receive an ambient sound and provide a dampened ambient sound to a wearer. The hearing protection device also includes an antenna, located within a housing of the first earmuff. The antenna comprises an external portion and an internal portion. The external portion is substantially outside the housing. The internal portion is located substantially within the housing. The internal portion connects to the external portion at a feed point. The hearing protection device also comprises a printed circuit board located within the housing. The printed circuit board comprises a ground plane. The antenna is configured to receive a radio signal in the 87.5-280 MHz range.

公开(公告)号：WO2016028553A1

公开(公告)日：2016-02-25

申请号：PCT/US2015/044748

申请日：2015-08-12

Applicant: 3M INNOVATIVE PROPERTIES COMPANY

Inventor： NGUYEN, Nhat Ha Thi ,  XUE, Thomas J. ,  ANGADJIVAND, Seyed A. ,  AUSEN, Ronald W. ,  KOPECKY, William J. ,  GIBSON, Mark T. ,  HANSSON, Olof N. ,  KRONZER, Joseph P.

IPC: A41D13/11 ,  A62B23/02 ,  B29D28/00 ,  A61F11/06 ,  A62B18/02 ,  A62B18/08

CPC classification number: A62B23/025 ,  A41D13/113 ,  A41D13/1138 ,  A41D13/1176 ,  A61F5/0104 ,  A61F11/14 ,  A62B18/025 ,  A62B18/084 ,  B29D28/00

Abstract: One or more embodiments of a respirator that includes a polymeric netting is disclosed. The respirator can include a mask body including a perimeter, a harness attached to the mask body, and a face seal disposed adjacent at least a portion of the perimeter of the mask body. In one or more embodiments, the face seal includes a polymeric netting including polymeric ribbons and polymeric strands, where each of the polymeric ribbons and strands having a length, width, and height, where the length is the longest dimension, the width is the shortest dimension, and the height is the dimension transverse to the length and the width. The polymeric ribbons have a height-to-width aspect ratio of at least 5 to 1, a major surface that is intermittently bonded to only one polymeric strand, and a height that is at least two times greater than a height of the one polymeric strand.

Abstract translation: 公开了包括聚合物网的呼吸器的一个或多个实施方案。 呼吸器可以包括包括周边的面罩主体，附接到面罩主体的线束以及邻近面罩主体的周边的至少一部分设置的面部密封件。 在一个或多个实施例中，面部密封件包括聚合物网，其包括聚合物带和聚合物链，其中每个聚合物带和股线具有长度，宽度和高度，其中长度是最长尺寸，宽度最短 尺寸，高度是横向于长度和宽度的尺寸。 聚合物带具有至少5至1的高宽比长宽比，其间隔地仅结合到一个聚合物链上的主表面，以及高于该聚合物链的高度的至少两倍的高度 。