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Ear acoustical attenuating device

  • US 4,353,364 A
  • Filed: 04/10/1980
  • Issued: 10/12/1982
  • Est. Priority Date: 01/18/1979
  • Status: Expired due to Term
First Claim
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1. An ear hearing protective device comprising:

  • an elastomer body means having a first aperture and a second aperture, said first and second apertures being laterally spaced apart and a connecting tubular means extending from said first and second apertures, said tubular means being tapered and adapted to be received in the ear canal of the human ear in a sound-sealing relationship;

    an auditory channel for passing sound waves therethrough extending through said body means from said first aperture therein and through said tubular means to an opening at its distal end;

    a sound attenuating means located in said channel operable to attenuate sound waves, said sound attenuating means having an opening of a lesser diameter than the said channel; and

    a removable plug means selectively inserted in said first aperture communicating with said auditory channel in said body means or in said second aperture therein to provide the wearer with selective total sound occlusion and partial sound attenuating depending upon the position of said plug means in said apertures.

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