公开(公告)号：US20180376588A1

公开(公告)日：2018-12-27

申请号：US16059621

申请日：2018-08-09

Applicant: 3M INNOVATIVE PROPERTIES COMPANY

Inventor： Matthew H. Frey ,  Brock A. Hable ,  Thomas Herdtle

IPC: H05K1/02 ,  G06F3/044 ,  G06F3/041 ,  H01L31/0224

Abstract: Articles comprising a substrate having a first major surface; an electrical conductor pattern on the first major surface of the substrate, the electrical conductor pattern comprising a plurality of separated pairs of separated first and second electrically conductive metallic traces. Optionally the articles further comprise a first electrically conductive layer. Embodiments of articles described herein are useful in, for example, displays, touch sensors, lighting elements, photovoltaic cells, electrochromic windows and displays, and electroluminescent lamps and displays.

公开(公告)号：US20180156296A1

公开(公告)日：2018-06-07

申请号：US15575152

申请日：2016-06-15

Applicant: 3M INNOVATIVE PROPERTIES COMPANY

Inventor： Jonathan H. Alexander ,  Georg Eichhorn ,  Ronald W. Gerdes ,  Thomas P. Hanschen ,  Thomas Herdtle ,  Taewook Yoo

IPC: F16F9/30 ,  B60R13/08 ,  B32B3/30 ,  B32B3/26 ,  B32B7/12 ,  B32B15/085 ,  B32B15/20

CPC classification number: F16F9/306 ,  B32B3/266 ,  B32B3/30 ,  B32B7/12 ,  B32B15/085 ,  B32B15/20 ,  B32B2307/102 ,  B60R13/0212 ,  B60R13/0243 ,  B60R13/0256 ,  B60R13/0815 ,  B62D25/20 ,  F16F1/3737 ,  F16F2226/042 ,  F16F2234/06

Abstract: A multilayer damping material for damping a vibrating surface comprising: at least one constraining layer; at least one dissipating layer; and at least one kinetic spacer layer comprising multiple spacer elements. The kinetic spacer layer is arranged between the constraining layer and the vibrating surface, when used for damping the vibrating surface. Each spacer element has opposite ends. At least one end of each of the multiple spacer elements is embedded in, bonded to, in contact with, or in close proximity to the dissipating layer, such that energy is dissipated within the multilayer damping material, through movement of the at least one end of each of the multiple spacer elements.

公开(公告)号：US20170241310A1

公开(公告)日：2017-08-24

申请号：US15503906

申请日：2015-09-09

Applicant: 3M INNOVATIVE PROPERTIES COMPANY

Inventor： Thomas P. Hanschen ,  Jonathan H. Alexander ,  Paul A. Martinson ,  John Stuart Bolton ,  Seungkyu Lee ,  Thomas Herdtle ,  Ronald W. Gerdes

IPC: F01N1/00 ,  F24F13/24 ,  F02M35/12 ,  F01N1/02 ,  F01N13/02

CPC classification number: F01N1/006 ,  F01N1/026 ,  F01N13/02 ,  F01N2470/02 ,  F01N2470/24 ,  F01N2490/155 ,  F02M35/1216 ,  F02M35/1255 ,  F24F13/24 ,  F24F2013/245 ,  G10K11/161

Abstract: Provided acoustic devices include an external housing defining an expansion chamber and a wall extending through and partitioning the expansion chamber into a central chamber and a peripheral chamber adjacent the central chamber, wherein an inlet and outlet communicate with the central chamber, and wherein the wall includes a plurality of apertures formed therethrough to allow air movement to and from the central and expansion chambers, the plurality of apertures sized to provide an average flow resistance ranging from 100 MKS Rayls to 5000 MKS Rayls. The acoustic devices advantageously show significant sound attenuation while streamlining air flow to reduce pressure drop across the expansion chamber.