Patents by Inventor Saimon Otaka

Saimon Otaka 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).

  • Displacement control signal correction method, displacement control device, construction machine and displacement control signal correction program
    Patent number: 7979229
    Abstract: The present invention includes: a displacement altering unit for generating a displacement control pressure corresponding to a displacement control signal; an input unit for inputting a target displacement; a pressure calculating unit for calculating a displacement control pressure corresponding to the target displacement based upon predetermined reference characteristics of the displacement altering unit; a pressure detecting unit for detecting a pressure corresponding to the displacement control pressure; a signal calculating unit for calculating a displacement control signal corresponding to the input target displacement; and a correcting unit for correcting the displacement control signal calculated by the signal calculating unit based upon the displacement control pressure having been calculated by the pressure calculating unit and the measured pressure detected by the pressure detecting unit.
    Type: Grant
    Filed: February 18, 2005
    Date of Patent: July 12, 2011
    Assignee: Hitachi Construction Machinery Co., Ltd.
    Inventors: Saimon Otaka, Yoshinori Ohwada, Gen Yasuda, Kenji Kakizawa
  • Displacement control signal correction method, displacement control device, construction machine and displacement control signal correction program
    Publication number: 20070193263
    Abstract: The present invention includes: a displacement altering means 4 for generating a displacement control pressure P corresponding to a displacement control signal i; an input means 12 for inputting a target displacement ?; a pressure calculating means 10 for calculating a displacement control pressure P corresponding to the target displacement ? based upon predetermined reference characteristics of the displacement altering means 4; a pressure detecting means 5 for detecting a pressure Pa corresponding to the displacement control pressure P; a signal calculating means 10 for calculating a displacement control signal i corresponding to the input target displacement ?; and a correcting means 10 for correcting the displacement control signal calculated by the signal calculating means 10 based upon the displacement control pressure P having been calculated by the pressure calculating means 10 and the measured pressure Pa detected by the pressure detecting means 5.
    Type: Application
    Filed: February 18, 2005
    Publication date: August 23, 2007
    Applicant: Hitachi Construction Machinery Co., Ltd.
    Inventors: Saimon Otaka, Yoshinori Ohwada, Gen Yasuda, Kenji Kakizawa