Patents by Inventor Tomoki Kishimoto

Tomoki Kishimoto 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).

  • Patent number: 11137168
    Abstract: A combustion device includes: a gas proportional valve; a control portion; a driving circuit; and a monitoring circuit. The monitoring circuit includes: a voltage generating portion configured to generate monitoring voltages corresponding to a driving current; and a branch output portion configured to output the monitoring voltages to a plurality of terminals of the control portion. When a voltage difference between the monitoring voltages input to the plurality of terminals is a determination reference value or more, the control portion determines that there is a failure of the monitoring circuit. When the voltage difference between the monitoring voltages is less than the determination reference value, and at least one of the monitoring voltages does not fall within a predetermined normal range while the gas proportional valve is controlled to become a predetermined state, the control portion determines that there is the failure of the monitoring circuit.
    Type: Grant
    Filed: February 12, 2019
    Date of Patent: October 5, 2021
    Assignee: NORITZ CORPORATION
    Inventors: Masahiro Mori, Tomoki Kishimoto
  • Publication number: 20210033308
    Abstract: A combustion device includes: a gas proportional valve; a control portion; a driving circuit; and a monitoring circuit. The monitoring circuit includes: a voltage generating portion configured to generate monitoring voltages corresponding to a driving current; and a branch output portion configured to output the monitoring voltages to a plurality of terminals of the control portion. When a voltage difference between the monitoring voltages input to the plurality of terminals is a determination reference value or more, the control portion determines that there is a failure of the monitoring circuit. When the voltage difference between the monitoring voltages is less than the determination reference value, and at least one of the monitoring voltages does not fall within a predetermined normal range while the gas proportional valve is controlled to become a predetermined state, the control portion determines that there is the failure of the monitoring circuit.
    Type: Application
    Filed: February 12, 2019
    Publication date: February 4, 2021
    Applicant: NORITZ CORPORATION
    Inventors: Masahiro MORI, Tomoki KISHIMOTO
  • 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
  • Patent number: 8485137
    Abstract: The present invention relates to a combustion control device incorporated in an apparatus such as water heater and provides the combustion control device having an improved configuration with a main controller and a sub controller, capable of employing a microcomputer with lower capability as the sub controller, and ensuring higher safety than ever before. Signals indicating a combustion state of a combustion apparatus are inputted into the main controller 35 and the sub controller 36 in parallel. Upon fulfillment of a predetermined condition of stopping, the main and sub controllers 35 and 36 each output a stop signal to cut off a current to be supplied to a device driving circuit 42. The conditions of stopping in outputting of the stop signal by the main and sub controllers are such that the sub controller 36 is less apt to execute the cutoff than the main controller 35.
    Type: Grant
    Filed: January 19, 2006
    Date of Patent: July 16, 2013
    Assignees: Noritz Corporation, Noritz Electronics Technology Corporation Inc.
    Inventors: Tomoki Kishimoto, Yuji Takagi, Masayoshi Yasukawa, Akira Takabayashi, Shinichi Okamoto, Hiroshi Yakoyama, Takashi Yashima, Masanori Kubotani
  • 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
  • Publication number: 20080092826
    Abstract: The present invention relates to a combustion control device incorporated in an apparatus such as water heater and provides the combustion control device having an improved configuration with a main controller and a sub controller, capable of employing a microcomputer with lower capability as the sub controller, and ensuring higher safety than ever before. Signals indicating a combustion state of a combustion apparatus are inputted into the main controller 35 and the sub controller 36 in parallel. Upon fulfillment of a predetermined condition of stopping, the main and sub controllers 35 and 36 each output a stop signal to cut off a current to be supplied to a device driving circuit 42. The conditions of stopping in outputting of the stop signal by the main and sub controllers are such that the sub controller 36 is less apt to execute the cutoff than the main controller 35.
    Type: Application
    Filed: January 19, 2006
    Publication date: April 24, 2008
    Applicants: Noritz Corporation, Noritz Electronics Technology Corporation Inc.
    Inventors: Tomoki Kishimoto, Yuji Takagi, Masayoshi Yasukawa, Akira Takabayashi, Shinichi Okamoto, Hiroshi Yokoyama, Takashi Yashima, Masanori Kubotani