Patents Represented by Attorney Wiliam J. Beard

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  • Transducer forming compression and shear waves for use in acoustic well logging
    Patent number: 4700803
    Abstract: For use in acoustic logging, an acoustic wave transducer system forming both compression and shear waves is disclosed, the system having the preferred form of a plurality of radially directed magnetostrictive expansion means, being N in number, each having a transducer plate affixed to the outer end thereof and further including means for providing a current to a coil wound thereabout forming flux initiating magnetostrictive expansion and contraction to form compression or shear waves.
    Type: Grant
    Filed: September 29, 1986
    Date of Patent: October 20, 1987
    Assignee: Halliburton Company
    Inventors: A. J. Mallett, John W. Minear