Patents Assigned to Nippon Tokushu Togyo Kabushiki Kaisha
  • Ultrasonic device
    Patent number: 3946829
    Abstract: An ultrasonic device for convergently radiating ultrasonic energy including a metallic ring vibrated to resonance by at least one electromechanical transducer fixed on the outer circumference of the ring, thereby to deliver high power ultrasonic waves from the inner circumference of the ring into the vacant center thereof.
    Type: Grant
    Filed: October 17, 1973
    Date of Patent: March 30, 1976
    Assignee: Nippon Tokushu Togyo Kabushiki Kaisha
    Inventors: Eiji Mori, Kozo Okada, Saburo Ueno