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Sound attenuating apparatus and method of forming the same

  • US 5,679,931 A
  • Filed: 07/10/1995
  • Issued: 10/21/1997
  • Est. Priority Date: 07/10/1995
  • Status: Expired due to Term
First Claim
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1. A sound attenuating apparatus for noise bearing fluid streams comprising:

  • a flow through housing including an upstream housing inlet end and a spaced downstream housing outlet end;

    elongated, perforated, shaped wall sheet means extending between said spaced upstream housing inlet and outlet ends, said wall sheet means being shaped to define at least one elongated perforated fluid flow-through passage for said noise bearing fluid stream to be attenuated;

    sound attenuating means arranged to surround said elongated perforated wall sheet means defining said fluid flow-through passage;

    and mechanical joining means including integral tab and slot means to join said shaped wall sheet means together outside said fluid flow-through passage to enhance noise bearing attenuation in a fluid stream flow and to reduce the risk of foreign materials ingestion.

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