公开(公告)号：US12198667B2

公开(公告)日：2025-01-14

申请号：US17602649

申请日：2020-04-13

Applicant: 3M INNOVATIVE PROPERTIES COMPANY

Inventor： Michelle M. Mok ,  Michael R. Berrigan ,  Nicole D. Petkovich ,  Jonathan H. Alexander ,  Michael S. Wendland ,  Seungkyu Lee ,  Hassan Sahouani

IPC: G10K11/165 ,  D06M11/74 ,  D06M11/77 ,  D06M15/01 ,  D06M15/227 ,  D06M23/08 ,  G10K11/168

Abstract: Provided are acoustic articles, and related methods, that include a porous layer and heterogeneous filler received in the porous layer. The heterogeneous filler can include clay, diatomaceous earth, graphite, glass bubbles, polymeric filler, non-layered silicate, plant-based filler, or a combination thereof, and can have a median particle size of from 1 micrometer to 1000 micrometers and a specific surface area of from 0.1 m2/g to 800 m2/g. The acoustic article can have an overall flow resistance of from 100 MKS Rayls to 8000 MKS Rayls. The acoustic articles can serve as acoustic absorbers, vibration dampers, and/or acoustic and thermal insulators.

公开(公告)号：US20230112198A1

公开(公告)日：2023-04-13

申请号：US17958992

申请日：2022-10-03

Applicant: 3M INNOVATIVE PROPERTIES COMPANY

Inventor： Taewook Yoo ,  Kim-Tong Gan ,  Anja C. Rohmann ,  Masato Kondo ,  Hirokazu Mizutani ,  Hyunjun Shin ,  Seungkyu Lee ,  Jonathan H. Alexander

IPC: G10K11/162 ,  G10K11/172

Abstract: Described herein are noise-resistant assemblies pursuant to various commercial and industrial applications. The noise-resistant assemblies can include duct assemblies, pool assemblies, motor assemblies, carpet flooring assemblies, and roofing assemblies. These assemblies incorporate an acoustic article containing a porous layer and a heterogeneous filler having a median particle size of from 1 micrometer to 1000 micrometers and a specific surface area of from 0.1 m2/g to 10,000 m2/g received in the porous layer.

公开(公告)号：US20210140678A1

公开(公告)日：2021-05-13

申请号：US16492393

申请日：2018-06-26

Applicant: 3M INNOVATIVE PROPERTIES COMPANY

Inventor： Seungkyu Lee ,  Thomas P. Hanschen ,  Jonathan H. Alexander ,  Thomas Herdtle ,  Ronald W. Gerdes

IPC: F24F13/24 ,  F16L55/033 ,  F24F13/02

Abstract: Provided are conduits for air flow that are capable of reducing noise and related methods. The provided conduits include a first section that is tubular and substantially non-perforated and a second section with at least a portion having a multiplicity of microperforations that provide an average flow resistance of from 50 MKS Rayls to 8000 MKS Rayls therethrough. The second section is either (a) tubular and connected in series with the first section, with an outer surface of the second section being in fluid communication with an outer surface of the conduit, or (b) disposed within the first section.

公开(公告)号：US10352210B2

公开(公告)日：2019-07-16

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: F01N1/02 ,  F01N1/00 ,  F02M35/12 ,  G10K11/16 ,  F01N13/02 ,  F24F13/24

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.

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.

公开(公告)号：US20240379087A1

公开(公告)日：2024-11-14

申请号：US18691974

申请日：2022-08-24

Applicant: 3M INNOVATIVE PROPERTIES COMPANY

Inventor： Nicole D. Petkovich ,  Yongbeom Seo ,  Tongyang Shi ,  Michael R. Berrigan ,  Michelle M. Mok ,  Seungkyu Lee ,  Jonathan H. Alexander

IPC: G10K11/165

Abstract: An acoustic article (10) comprising a porous layer (14) and an acoustic absorbing filler (18) embedded within the porous layer, and methods of making the same. The acoustic absorbing filler includes agglomerates comprising porous amorphous silica particles and a binder. The acoustic absorbing filler has a median sieved particle size of 100 i.un to 2000 i.un. The acoustic article has a normal incidence acoustic absorption of no less than 0.09 a at 400 Hz.

公开(公告)号：US12033607B2

公开(公告)日：2024-07-09

申请号：US16755787

申请日：2018-10-19

Applicant: 3M INNOVATIVE PROPERTIES COMPANY

Inventor： Seungkyu Lee ,  Megan A. Creighton ,  Jonathan H. Alexander ,  Michael R. Berrigan ,  Thomas P. Hanschen

IPC: G10K11/168 ,  B32B3/26 ,  B32B5/02 ,  B32B27/20 ,  B32B27/32 ,  D06M11/74 ,  D06M101/20

CPC classification number: G10K11/168 ,  B32B3/266 ,  B32B5/022 ,  B32B27/20 ,  B32B27/32 ,  D06M11/74 ,  B32B2262/0253 ,  B32B2262/0292 ,  B32B2264/108 ,  B32B2264/2031 ,  B32B2264/307 ,  B32B2307/102 ,  B32B2605/08 ,  B32B2605/18 ,  D06M2101/20

Abstract: Provided are acoustic articles having a porous layer (102,104,106) placed in contact with a heterogeneous filler comprising porous carbon and having an average surface area of from 0.1 m2/g to 10,000 m2/g. The acoustic articles can have a flow resistance of from 10 MKS Rayls to 5000 MKS Rayls. Optionally, the porous layer includes a non-woven fibrous layer or a perforated film having a plurality of apertures with an average narrowest diameter of from 30 micrometers to 5000 micrometers. The heterogeneous filler can enhance low frequency performance without significantly compromising high frequency performance, thickness or weight.

公开(公告)号：US20230326443A1

公开(公告)日：2023-10-12

申请号：US18044473

申请日：2021-09-09

Applicant: 3M INNOVATIVE PROPERTIES COMPANY

Inventor： Michelle M. Mok ,  Nicole D. Petkovich ,  Michael R. Berrigan ,  Yongbeom Seo ,  Andrew J. Hatch ,  Kevin A. Frankel ,  Seungkyu Lee

IPC: G10K11/165 ,  G10K11/168 ,  D04H3/16 ,  D04H3/007 ,  D06M23/08 ,  D06M11/74 ,  D04H1/56 ,  D04H1/413 ,  D04H1/4291

CPC classification number: G10K11/165 ,  G10K11/168 ,  D04H3/16 ,  D04H3/007 ,  D06M23/08 ,  D06M11/74 ,  D04H1/56 ,  D04H1/413 ,  D04H1/4291 ,  D10B2321/022 ,  D06M2101/20

Abstract: An acoustic absorbing filler, the acoustic absorbing filler comprising agglomerates comprising a first phase comprising a plurality of porous particulates and a second phase comprising a binder; wherein the acoustic absorbing filler has a median sieved particle size of from 100 micrometer to 700 micrometers and a specific surface area of from 50 m2/g to 900 m2/g; wherein the acoustic absorbing filler has a normal incidence acoustic absorption of no less than 0.20 alpha at 400 Hz.

公开(公告)号：US20210270337A1

公开(公告)日：2021-09-02

申请号：US17253980

申请日：2019-06-28

Applicant: 3M INNOVATIVE PROPERTIES COMPANY

Inventor： David Rudek ,  Georg Eichhorn ,  Anja C. Rohmann ,  Ronald W. Gerdes ,  Taewook Yoo ,  Thomas P. Hanschen ,  Thomas Herdtle ,  Seungkyu Lee ,  Kim-Tong Gan ,  Knut Schumacher ,  Jonathan H. Alexander

IPC: F16F1/36 ,  F16F1/373 ,  B32B5/18 ,  B32B5/02 ,  B32B3/30

Abstract: Multilayer damping material for damping a vibrating surface (10) including: at least one constraining layer (4); at least one dissipating layer (1, 3); at least one kinetic spacer layer (2) including multiple spacer elements (2b), the kinetic spacer layer being arranged between the constraining layer and the vibrating surface, when used for damping the vibrating surface, wherein 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; absorbing material as at least one additional layer (12) or within at least one of the above layers.