FREE-FLOODED RING TRANSDUCER WITH SLOW WAVE GUIDE
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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Abstract
This disclosure is directed to a free-flooded ring type transducer in combination with a coaxial slow waveguide for transmitting or receiving signals which improves the performance by delaying the radiation from the inner surface by one-half wavelength so that the radiation from the inner and outer surfaces are in phase.
8 Citations
2 Claims
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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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2. A free-flooded ring transducer as claimed in claim 1;
- wherein, said slow waveguide has an outer diameter substantially equal to the inside diameter of said ring element and is coaxial therewith.
Specification