Patent ID: 6075310
Filing Date: 2000-06-13
Classification: G10K

Abstract:
An acoustic transducer, comprising:a transducer housing surrounding a transducer housing interior;said transducer housing comprising a top portion and a bottom portion removably attached to said top portion;said bottom portion having a thickness measurable between an interior surface and an exterior surface;said exterior surface being adapted to engage a work medium;said interior surface having a first acoustic impedance;said exterior surface having a second acoustic impedance;said top portion having a third acoustic impedance different from said first acoustic impedance;a liquid disposed within said transducer housing interior;wherein said liquid has an acoustic impedance;a value of said acoustic impedance of said liquid substantially matching said first acoustic impedance of said interior surface;a piezoelectric member immersed in said liquid; and, energizing means for electrically energizing said piezoelectric member;said energizing means comprising means for applying an alternating voltage to said piezoelectric member at a first frequency.