Patents by Inventor Mitsuo Kakuta

Mitsuo Kakuta 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).

  • Hydraulic system and universal testing machine
    Patent number: 8596058
    Abstract: There is provided a hydraulic system, including an oil tank storing operating oil, a hydraulic actuator, and a hydraulic pump which draws the operating oil from the oil tank and supplies the operating oil to the hydraulic actuator. The hydraulic system is provided with an operating oil separating unit which is located at a midway point of a main tube sending the operating oil from the hydraulic pump to the hydraulic actuator and which separates a part of the operating oil supplied from the hydraulic pump to return the part of the operating oil to the oil tank. A universal testing machine including the hydraulic system is also provided.
    Type: Grant
    Filed: November 7, 2011
    Date of Patent: December 3, 2013
    Assignee: Kokusai Keisokuki Kabushiki Kaisha
    Inventors: Sigeru Matsumoto, Hiroshi Miyashita, Kazuyoshi Tashiro, Kazuhiro Murauchi, Mitsuo Kakuta
  • HYDRAULIC SYSTEM AND UNIVERSAL TESTING MACHINE
    Publication number: 20120048029
    Abstract: There is provided a hydraulic system, including an oil tank storing operating oil, a hydraulic actuator, and a hydraulic pump which draws the operating oil from the oil tank and supplies the operating oil to the hydraulic actuator. The hydraulic system is provided with an operating oil separating unit which is located at a midway point of a main tube sending the operating oil from the hydraulic pump to the hydraulic actuator and which separates a part of the operating oil supplied, from the hydraulic pump to return the part of the operating oil to the oil tank. A universal testing machine including the hydraulic system is also provided.
    Type: Application
    Filed: November 7, 2011
    Publication date: March 1, 2012
    Applicant: KOKUSAI KEISOKUKI KABUSHIKI KAISHA
    Inventors: Sigeru Matsumoto, Hiroshi Miyashita, Kazuyoshi Tashiro, Kazuhiro Murauchi, Mitsuo Kakuta