Patents Assigned to Bach-Simpson Limited
  • Power measuring apparatus for ultrasonic transducers
    Patent number: 4160388
    Abstract: A measuring apparatus employs a target vane suspended from a movable arm and disposed in a water bath. The transducer under test is arranged to direct its energy at the vane. An electric nulling circuit maintains the arm in its initial position. The current required to do so is a measure of the power of the transducer. An acoustic trap is provided to insure accurate measurement.
    Type: Grant
    Filed: June 19, 1978
    Date of Patent: July 10, 1979
    Assignee: Bach-Simpson Limited
    Inventor: Victor Carriere