Patents Assigned to Ultra Sonus AB
  • Method and a device for attaching ultrasonic transducers
    Patent number: 6308585
    Abstract: Ultrasonic energy from an ultrasonic transducer 3 is transmitted through a member 1, such as the wall of a vessel, on which the transducer is mounted. A cylindrical projection 2 is formed integral with the member, and the ultrasonic transducer main body is attached to the projection, e.g. by screwing the body onto outer threads of the cylindrical projection. The cylindrical projection is designed to form the lower part of the ultrasonic transducer.
    Type: Grant
    Filed: February 10, 2000
    Date of Patent: October 30, 2001
    Assignee: Ultra Sonus AB
    Inventors: Bo Nilsson, Håkan Dahlberg
  • Tubular ultrasonic transducer
    Patent number: 6016023
    Abstract: A method to improve the high output characteristics of an ultrasonic transducer by urging a cooling gas 13 to flow through the transducer, thereby passing a cooling member 3 at the inner radius of at least one piezoelectric element 6 surrounding a central fluid conduit 21. In a preferred embodiment sulfurhexafluoride (SF.sub.6) is used as cooling gas.
    Type: Grant
    Filed: May 12, 1998
    Date of Patent: January 18, 2000
    Assignee: Ultra Sonus AB
    Inventors: Bo Nilsson, H.ang.kan Dahlberg
  • High power ultrasonic transducer
    Patent number: 5955823
    Abstract: A method to improve the high output characteristics of a ultrasonic transducer 1 by urging a cooling gas 13 to flow through the transducer, thereby passing a cooling member 18 between each adjacent pair of piezoelectric elements 6, 7. In a preferred embodiment sulfurhexafluoride (SF.sub.6) is used as cooling gas.
    Type: Grant
    Filed: May 12, 1998
    Date of Patent: September 21, 1999
    Assignee: Ultra Sonus AB
    Inventors: Bo Nilsson, H.ang.kan Dahlberg