Patents by Inventor Ikumin RYUZAKI

Ikumin RYUZAKI 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).

  • Carburetor including a manual fuel control device
    Patent number: 11131272
    Abstract: A needle valve body (220) has a needle hollow part (230) and a slit (232) extending in an axial direction and opened forward in a tip region. The carburetor body (B) has a body hole (202) receiving the needle valve body (220) in a longitudinally displaceable manner along an axis and a step-part circumferential edge (240a) formed in the body hole (202) and forming an orifice (250) with the slit (232) of the needle valve body (220). By operating the needle valve body (220) to adjust the size of the orifice (250), an amount of fuel supplied to a fuel discharge part (Fout) can be adjusted.
    Type: Grant
    Filed: August 7, 2019
    Date of Patent: September 28, 2021
    Assignee: YAMABIKO CORPORATION
    Inventors: Ikumin Ryuzaki, Takumi Nonaka, Tamotsu Saito, Tomoyoshi Kudo
  • Carburetor Including A Manual Fuel Control Device
    Publication number: 20200049106
    Abstract: A needle valve body (220) has a needle hollow part (230) and a slit (232) extending in an axial direction and opened forward in a tip region. The carburetor body (B) has a body hole (202) receiving the needle valve body (220) in a longitudinally displaceable manner along an axis and a step-part circumferential edge (240a) formed in the body hole (202) and forming an orifice (250) with the slit (232) of the needle valve body (220). By operating the needle valve body (220) to adjust the size of the orifice (250), an amount of fuel supplied to a fuel discharge part (Fout) can be adjusted.
    Type: Application
    Filed: August 7, 2019
    Publication date: February 13, 2020
    Applicant: Yamabiko Corporation
    Inventors: Ikumin RYUZAKI, Takumi NONAKA, Tamotsu SAITO, Tomoyoshi KUDO