-
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
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.
-
12.发明申请公开(公告)号：US20190213990A1
公开(公告)日：2019-07-11
申请号：US16325464
申请日：2017-08-11
Applicant: 3M INNOVATIVE PROPERTIES COMPANY
Inventor： James M. Jonza , Ronald W. Gerdes , Thomas Herdtle , Jeffrey P. Kalish , Jason D. McNulty , Harold C. Knecht, III , Taewook Yoo
IPC: G10K11/168 , B32B3/12
Abstract: Panels comprising first and second layers and a core disposed there between, wherein the core has a plurality of walls providing a series of connected cells, wherein some of the cell walls have openings providing fluid communication between a series of at least 3 cells, and wherein the opening in a cell wall has an area that is at least 50 percent of the area of a side of that cell wall. Exemplary embodiments of panels described herein can be formed articles such as panels, walls, or other parts with curved surfaces. In one exemplary method, panels are shaped via thermoforming. In another exemplary method, panels are shaped via insert molding to provide the article. In another exemplary method, panels are shaped via compression molding to provide the article. The panels are useful for absorbing sound in a designed frequency range.
-
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
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
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.
-
-
-
Search Results
14
records
(took 0.017 seconds)
