Pressure wave transducing

  • US 4,628,528 A
  • Filed: 09/29/1982
  • Issued: 12/09/1986
  • Est. Priority Date: 09/29/1982
  • Status: Expired due to Term
First Claim
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1. A system for transmitting pressure wave energy with a medium that propagates pressure waves comprising,transducing means having a vibratile surface for converting energy in one of pressure wave and electrical forms to the other,at least one low loss pressure wave transmission line means for transmitting energy between said medium and said vibratile surface,said pressure wave transmission line means having one end adjacent to said vibratile surface and the other end adjacent to said medium and an effective length corresponding substantially to a quarter wavelength at the lowest frequency of pressure wave energy to be transmitted between said medium and said vibratile surface.

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