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Acoustic backup alarm for providing acoustic and dual technology (acoustical and optical) operation

  • US 20110102666A1
  • Filed: 11/05/2010
  • Published: 05/05/2011
  • Est. Priority Date: 11/05/2009
  • Status: Active Grant
First Claim
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1. An acoustic alarm which comprises:

  • an acoustic signal generator;

    a housing in which said generator is mounted which direct sound around said generator out of an exit end of said housing, said housing and said generator defining a compartment between the generator and the exit end;

    a member over said compartment on said exit end; and

    ports around said member in said exit end through which said acoustic signals project.

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