Patents Assigned to Avtaec Limited
  • Underwater transducers
    Patent number: 4665750
    Abstract: A transducer for sensing transient elastic waves in metallic components particularly in steel weldments below water on offshore structures comprises a piezoelectric sensing element (1) for coupling to the metallic component and shielded from noise arriving in directions other than the component by an elastomeric encapsulation (22) such as of aerated polyurethane.
    Type: Grant
    Filed: December 17, 1985
    Date of Patent: May 19, 1987
    Assignee: Avtaec Limited
    Inventor: Leonard M. Rogers