US2012125711A1PendingUtilityA1

Sound absorbing panel and system

18
Individually held — no corporate assignee on recordPriority: Nov 24, 2010Filed: Nov 25, 2011Published: May 24, 2012
Est. expiryNov 24, 2030(~4.3 yrs left)· nominal 20-yr term from priority
Inventors:Richard E. Stahr
E01F 8/007E04B 2001/8433E04B 2001/8442
18
PatentIndex Score
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Cited by
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Claims

Abstract

Disclosed are a sound absorbing panels and a sound absorbing system using such panels, particularly for use in reducing highway and railway noise. The panel includes an enclosure including a first panel face with a number of apertures or holes to allow sound passage, where the ratio of the area of the apertures to the total area of the first panel face is set at a predetermined percentage. The enclosure is configured such that an inner surface of the first panel face is proximate to a fibrous sound absorbing material with an area approximately equal to the total area of the first panel face. The panel enclosure may have various shapes and configurations for optimal sound absorption, and may be configured in a sound absorbing system such that one or more of the panels are mountable to existing structures, such as sound barrier walls in a retrofit manner.

Claims

exact text as granted — not AI-modified
1 . A sound absorbing panel comprising:
 an enclosure including a first panel face including a plurality of apertures, wherein the ratio of the area of the apertures to the total area of the first panel face is set at a predetermined percentage, the first panel face having a first side comprising an outer surface of the enclosure and a second side comprising an inner surface of the enclosure;   a fibrous sound absorbing material having a first side with an area approximately equal to the total area of the first panel face and the first side of the sound absorbing material disposed proximate to the second side of the first panel face.   
     
     
         2 . The panel as defined in  claim 1 , wherein the predetermined percentage is 23%. 
     
     
         3 . The panel as defined in  claim 1 , wherein each of the plurality of apertures are round. 
     
     
         4 . The panel as defined in  claim 1 , wherein the first face is planar. 
     
     
         5 . The panel as defined in  claim 1 , wherein a first portion of the first face lies in a plane and a second portion of the first face is angled away from the plane. 
     
     
         6 . The panel as defined in  claim 1 , wherein a first portion lies in a plane and a second portions curves and extends away from the plane. 
     
     
         7 . The panel as defined in  claim 1 , wherein the fibrous sound absorbing material comprises at least cotton denim fibers. 
     
     
         8 . The panel as defined in  claim 1 , wherein the fibrous sound absorbing material is semi-rigid and monolithic. 
     
     
         9 . The panel as defined in claim material has thickness of at least approximately 2 inches. 
     
     
         11 . A sound absorbing panel system comprising:
 one or more sound absorbing panels configured to be mounted to a surface positioned to receive incident noise from one or more noise sources, each of the one of more sound absorbing panels comprising:
 an enclosure including a first panel face including a plurality of apertures, wherein the ratio of the area of the apertures to the total area of the first panel face is set at a predetermined percentage, the first panel face having a first side comprising an outer surface of the enclosure and a second side comprising an inner surface of the enclosure; and 
 a fibrous sound absorbing material having a first side with an area approximately equal to the total area of the first panel face and the first side of the sound absorbing material disposed proximate to the second side of the first panel face. 
   
     
     
         12 . The system as defined in  claim 11 , wherein the predetermined percentage is 23%. 
     
     
         13 . The system as defined in  claim 11 , wherein a first portion of the first face lies in a plane and a second portion of the first face is angled away from the plane. 
     
     
         14 . The system as defined in  claim 11 , wherein a first portion lies in a plane and a second portions curves and extends away from the plane. 
     
     
         15 . The system as defined in  claim 11 , wherein the fibrous sound absorbing material comprises at least cotton denim fibers. 
     
     
         16 . The system as defined in  claim 11 , wherein the fibrous sound absorbing material is semi-rigid and monolithic. 
     
     
         17 . The system as defined in  claim 11  wherein the fibrous sound absorbing material has thickness of at least approximately 2 inches. 
     
     
         18 . The system as defined in  claim 11 , wherein the surface comprises at least one of a highway sound reflecting barrier wall and a railroad sound reflecting barrier wall. 
     
     
         19 . The system as defined in  claim 18 , wherein the surface is part of existing structures and the system is further configured to be mountable to the surface as a retrofit system.

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