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Sound and vibration transmission pad and system

  • US 7,918,308 B2
  • Filed: 05/13/2009
  • Issued: 04/05/2011
  • Est. Priority Date: 03/10/2003
  • Status: Active Grant
First Claim
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1. A chair comprising:

  • a seat portion comprising a vibration source; and

    ,a back portion comprising a speaker, a layered plurality of materials, and a resonant chamber, wherein at least a portion of the resonant chamber is defined within an aperture extending through at least one material of the layered plurality of materials, and wherein at least a portion of said aperture is configured to be positioned between the speaker and a user sitting in the chair.

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