Patents by Inventor Tomoko Ikeuchi

Tomoko Ikeuchi 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).

  • Driving method for solenoid valve, solenoid valve driving apparatus, and combustion apparatus including same
    Patent number: 10240785
    Abstract: A solenoid valve driving apparatus includes switching means for ON/OFF-controlling application of a direct current voltage to a solenoid of a solenoid valve, and signal outputting means. A first period and a consecutive second period are set as a valve opening operation period of the solenoid valve. When the signal outputting means outputs the PWM signal to the switching means, a duty ratio of the output signal is set to be higher in the second period than in the first period so that a power supplied to the solenoid is larger in the second period than in the first period. As a result, a valve opening operation is performed in the solenoid valve reliably, and loud noise generation during the valve opening operation is suppressed.
    Type: Grant
    Filed: January 27, 2011
    Date of Patent: March 26, 2019
    Assignee: Noritz Corporation
    Inventors: Daisuke Konishi, Akira Ohta, Yoshihisa Kitano, Tomoya Nakano, Yoshifumi Atobe, Haruki Inoue, Yoshitaka Kimura, Ryo Ikeda, Tomoki Kishimoto, Yasuhide Ikeuchi, Tomoko Ikeuchi
  • Driving method for solenoid valve, solenoid valve driving apparatus, and combustion apparatus including same
    Publication number: 20110183277
    Abstract: A solenoid valve driving apparatus includes switching means for ON/OFF-controlling application of a direct current voltage to a solenoid of a solenoid valve, and signal outputting means. A first period and a consecutive second period are set as a valve opening operation period of the solenoid valve. When the signal outputting means outputs the PWM signal to the switching means, a duty ratio of the output signal is set to be higher in the second period than in the first period so that a power supplied to the solenoid is larger in the second period than in the first period. As a result, a valve opening operation is performed in the solenoid valve reliably, and loud noise generation during the valve opening operation is suppressed.
    Type: Application
    Filed: January 27, 2011
    Publication date: July 28, 2011
    Applicant: NORITZ CORPORATION
    Inventors: Daisuke Konishi, Akira Ohta, Yoshihisa Kitano, Tomoya Nakano, Yoshifumi Atobe, Haruki Inoue, Yoshitaka Kimura, Ryo Ikeda, Tomoki Kishimoto, Yasuhide Ikeuchi, Tomoko Ikeuchi