公开(公告)号：USD983174S1

公开(公告)日：2023-04-11

申请号：US29758483

申请日：2020-11-16

Applicant: 3M Innovative Properties Company

Designer： William P. Atwood ,  Yi-Chi Huang ,  Jeffrey L. Hamer ,  Paul D. Henry

公开(公告)号：US09636259B2

公开(公告)日：2017-05-02

申请号：US14798516

申请日：2015-07-14

Applicant: 3M INNOVATIVE PROPERTIES COMPANY

Inventor： Paul D. Henry ,  David M. Lutgring ,  David A. Hotvet

IPC: A61F11/06 ,  A61F11/08 ,  H04R1/10 ,  H04R25/00

CPC classification number: A61F11/08 ,  H04R1/1016 ,  H04R1/1091 ,  H04R25/654

Abstract: Water resistant acoustic ports and electronic hearing protection devices incorporating such ports are described. More specifically, water proof acoustic ports that provide water protection for an internal sealed chamber by providing acoustically transparent inlets that are capable of withstanding external water pressure at given depth due to their volume relation to that of the internal chamber, as well as hearing protection devices incorporating such ports, are described.

公开(公告)号：USD719549S1

公开(公告)日：2014-12-16

申请号：US29473001

申请日：2013-11-18

Applicant: 3M Innovative Properties Company

Designer： Paul D. Henry ,  Michael J. Pescetto ,  Mark A. Yoder