Patents by Inventor Yuta Iihara

Yuta Iihara 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).

  • Portable working machine including engine with carburetor and fuel supply control method thereof
    Patent number: 10495017
    Abstract: To optimize fuel supply of an engine with a carburetor during engine operation, a throttle opening degree detection sensor detecting a throttle opening degree and a control unit controlling a valve body variably controlling an opening degree of a fuel discharge part or a fuel supply passage based on a map are included. The map includes a plurality of sections divided based on the throttle opening degree and an opening degree of the valve body set for each section. The opening degree of the valve body set for each section is the opening degree of the valve body at which the engine rotation speed is highest in each section. The control unit controls an electric actuator driving the valve body to achieve the opening degree of the valve body set in a section to which the throttle opening degree detected by the throttle opening degree detection sensor belongs out of the plurality of sections.
    Type: Grant
    Filed: April 17, 2018
    Date of Patent: December 3, 2019
    Assignee: Yamabiko Corporation
    Inventors: Takumi Nonaka, Shirou Yamaguchi, Toru Kono, Genichi Sato, Yuta Iihara
  • Portable Working Machine Including Engine With Carburetor And Fuel Supply Control Method Thereof
    Publication number: 20180334980
    Abstract: To optimize fuel supply of an engine with a carburetor during engine operation, a throttle opening degree detection sensor detecting a throttle opening degree and a control unit controlling a valve body variably controlling an opening degree of a fuel discharge part or a fuel supply passage based on a map are included. The map includes a plurality of sections divided based on the throttle opening degree and an opening degree of the valve body set for each section. The opening degree of the valve body set for each section is the opening degree of the valve body at which the engine rotation speed is highest in each section. The control unit controls an electric actuator driving the valve body to achieve the opening degree of the valve body set in a section to which the throttle opening degree detected by the throttle opening degree detection sensor belongs out of the plurality of sections.
    Type: Application
    Filed: April 17, 2018
    Publication date: November 22, 2018
    Applicant: Yamabiko Corporation
    Inventors: Takumi Nonaka, Shirou Yamaguchi, Toru Kono, Genichi Sato, Yuta Iihara