Patents by Inventor Katsumi Ikusawa

Katsumi Ikusawa has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Apparatus for generating an underliquid shock pressure
    Patent number: 5379621
    Abstract: A method for generating an underliquid shock pressure comprises the steps of igniting a combustible mixture gas to form detonation waves, imploding the detonation waves in their advancing direction, propagating a pressure obtained by imploding the detonation waves to a liquid, and converting the pressure to an underliquid pressure which is applied to a workpiece. The pressure obtained by imploding the detonation waves may be applied directly to an elastic rubber body, thus converting the pressure to an underelastomer shock pressure, which is then applied to the workpiece via the elastic body.
    Type: Grant
    Filed: April 5, 1994
    Date of Patent: January 10, 1995
    Assignee: NKK Corporation
    Inventors: Minoru Suzuki, Katsumi Ikusawa, Kenji Araki, Naotake Yoshihara, Yoshio Murayama
  • Apparatus for generating a detonation pressure
    Patent number: 5339666
    Abstract: A method for generating an underliquid shock pressure comprises the steps of igniting a combustible mixture gas to form detonation waves, imploding the detonation waves in their advancing direction, propagating a pressure obtained by imploding the detonation waves to a liquid, and converting the pressure to an underliquid pressure which is applied to a workpiece. The pressure obtained by imploding the detonation waves may be applied directly to an elastic rubber body, thus converting the pressure to an underelastomer shock pressure, which is then applied to the workpiece via the elastic body.
    Type: Grant
    Filed: May 18, 1993
    Date of Patent: August 23, 1994
    Assignee: NKK Corporation
    Inventors: Minoru Suzuki, Katsumi Ikusawa, Kenji Araki, Naotake Yoshihara, Yoshio Murayama
  • Method for generating a detonation pressure
    Patent number: 5256430
    Abstract: A method for generating an underliquid shock pressure comprises the steps of igniting a combustible mixture gas to form detonation waves, imploding the detonation waves in their advancing direction, propagating a pressure obtained by imploding the detonation waves to a liquid, and converting the pressure to an underliquid pressure which is applied to a workpiece. The pressure obtained by imploding the detonation waves may be applied directly to an elastic rubber body, thus converting the pressure to an underelastomer shock pressure, which is then applied to the workpiece via the elastic body.
    Type: Grant
    Filed: May 21, 1992
    Date of Patent: October 26, 1993
    Assignee: NKK Corporation
    Inventors: Minoru Suzuki, Katsumi Ikusawa, Kenji Araki, Naotake Yoshihara, Yoshio Murayama