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Attenuating foam insert and method for manufacture

  • US 20050126845A1
  • Filed: 12/10/2004
  • Published: 06/16/2005
  • Est. Priority Date: 12/10/2003
  • Status: Abandoned Application
First Claim
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1. A shaped acoustic foam insert for use in an earcup of a circumaural hearing protector comprising:

  • a cross-section and shape adapted to occupy the entire interior volume of the earcup, the insert having no folds or open acoustic cavities, and a curvilinear groove cut in a surface facing an ear of a user of the circumaural hearing protector, wherein the curvilinear groove accommodates the average human pinna and has no sharp angles.

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