Noise attenuator

Abstract

A noise attenuating member ( 12 ) has a channel ( 24 ) for receiving a timber batten ( 13 ). A flooring ( 14 ) may be affixed to the batten ( 13 ). The noise attenuating member acts as a cushion between the batten ( 13 ) and a substrate such as a joist ( 11, 51 ) or a concrete slab ( 50 ). Noise attenuating holes ( 1201 ) and retaining flanges ( 25, 56 ) may optionally be provided.

1 . A polymeric noise attenuating member for a flooring system comprising: 
 a body portion having upwardly extending side walls which define a channel;    the channel adapted to receive a fixing member.    
     
     
         2 . The member of  claim 1 , wherein: 
 each side wall further comprises inwardly directed top flanges which define a restricted entry into the channel.    
     
     
         3 . The member of  claim 2 , wherein: 
 the body portion further comprises a plurality of through openings which extend through a bottom surface.    
     
     
         4 . The member of  claim 3 , wherein: 
 the openings are about 20 mm in diameter, each having a centre;    adjacent centres spaced apart by about 40 mm.    
     
     
         5 . The member of  claim 1 , wherein: 
 the polymeric member is extruded from a blend of polymers.    
     
     
         6 . The member of  claim 5 , wherein: 
 the blend is a blend of polyisophere natural rubber and butyl rubber.    
     
     
         7 . A polymeric noise attenuating member for a flooring system comprising: 
 a body which is about as wide as a timber batten and provided with regularly spaced openings along its length.    
     
     
         8 . The member of  claim 7 , wherein: 
 the openings are about 20 mm in diameter.    
     
     
         9 . The member of  claim 8 , wherein: 
 the openings are spaced apart by about 40 mm.    
     
     
         10 . The member of  claim 7  wherein: 
 the blend is a blend of polyisophere natural rubber and butyl rubber.  
 
     
     
         11 . A floor, comprising: 
 a timber or concrete support member and a flooring comprising a board or sheet;    the support member and flooring having between them a polymeric noise attenuating member;    the noise attenuating member having above it, a timber batten to which the flooring is fastened.    
     
     
         12 . The floor of  claim 11 , wherein: 
 the noise attenuating member is adhesively mounted to the support member.    
     
     
         13 . The floor of  claim 7 , wherein: 
 the noise attenuating member is one according to any one of  claims 1  to  10 .    
     
     
         14 . In combination, a noise attenuating member of any one of claims  1 - 6  and a timber batten; 
 the batten having an inverted T cross-section, the head of the T being retained in the channel, the batten also having a fixing portion which, in sue, extends above the side walls.  
 
     
     
         15 . The combination of  claim 14 , wherein: 
 the batten is provided with through openings which extend through a bottom surface of the batten and which are sized to admit fasteners for affixing the noise attenuating member to a substrate.