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Receiver suspension and acoustic porting system

  • US 4,729,451 A
  • Filed: 06/27/1986
  • Issued: 03/08/1988
  • Est. Priority Date: 05/30/1984
  • Status: Expired due to Term
First Claim
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1. A receiver suspension and acoustic porting system for a hearing aid, said hearing aid including a receiver having an acoustic output port, comprising, in combination:

  • an external shell including an inward wall, an open end, and a side wall therebetween, said inward wall defining an output port therethrough, said inward and side walls defining both an interior surface and an interior area of said shell,pliable suspension means within said interior area, substantially affixed to said interior surface of said shell and extending inwardly therefrom, for supporting said receiver, said pliable suspension means being made of a pliant material and defining first and second voids and a plurality of pliable rib means,said first void defining a receiver chamber for accepting said receiver,said second void defining an elongate output passageway extending from said acoustic output port of said receiver at one end to said acoustic output port of said shell at another end, said one end of said elongate output passageway defining coupling means for grippingly engaging said acoustic output port of said receiver, whereby said acoustic output port is acoustically linked to said output passageway and said output port of said shell, andsaid pliable rib means extending into said receiver chamber, for supporting said receiver, whereby said receiver is cushioned by said pliable suspension means and ribs and substantially acoustically isolated from said shell.

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