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Sound-absorption panel

  • US 4,094,379 A
  • Filed: 09/13/1976
  • Issued: 06/13/1978
  • Est. Priority Date: 09/13/1976
  • Status: Expired due to Term
First Claim
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1. A sound-absorbent structure comprising an outer shell of high-density sound-deflecting material forming a cavity with sound-deflecting walls and a mouth adapted to open toward the sound emitter, and a body of low-density sound-absorbent material disposed within the cavity and extending outwardly relative thereto in spaced relationship to the walls of said cavity;

  • said sound-deflecting walls having inner plane surfaces diverging at an angle less than ninety degrees from an inner vertex, said sound-absorbent body being in the form of a strip of material having opposed plane surfaces and inner and outer edges with its inner edge at the vertex between said sound-deflecting walls and with its outer edge exposed at a position substantially outwardly thereof, said sound-absorbent strip bisecting said cavity formed by said diverging sound-deflecting walls to provide pockets at each side of said strip, each of said pockets having a plane sound-deflecting surface formed by one of said sound-deflecting walls and a plane absorbing surface adjacent thereto and on said sound-absorbing strip which are disposed relatively at an angle of less than 45°

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