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FREE-FLOODED RING TRANSDUCER WITH SLOW WAVE GUIDE

  • US 3,755,698 A
  • Filed: 04/25/1972
  • Issued: 08/28/1973
  • Est. Priority Date: 04/25/1972
  • Status: Expired due to Term
First Claim
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1. A free-flooded ring transducer which includes:

  • a transducer ring element, means connected with said ring element for applying a signal source thereto to produce vibrational movement in said ring element, and a slow waveguide operatively connected with said ring element in axial alignment therewith, said slow waveguide is made of silicone rubber of cylindrical shape, whereby sound pressure radiation from the inner surface of said ring is delayed by one-half wavelength so that the sound wave radiation from the inner and outer surfaces are in phase in one direction along the ring axis.

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