Patents Assigned to Fulmer Limited
  • Ultrasonic investigation apparatus
    Patent number: 4870970
    Abstract: An apparatus for transmitting acoustic ultrasonic pulses and for receiving "echos" of the transmitted pulses, comprises a housing, an upstanding wall mounted on the housing defining the mouth of a well, and a transducer mounted in the housing so that the operative part of the transducer is located in the well. The well is substantially watertight and is provided with a jet for introducing water or other fluids to the well, or is pre-filled with fluid.
    Type: Grant
    Filed: May 6, 1988
    Date of Patent: October 3, 1989
    Assignee: Fulmer Limited
    Inventors: Nigel Gray, Simon Knibbs, Patrick A. Finlay, Robert L. Crocker