Patents by Inventor Mikito YOKOYAMA

Mikito YOKOYAMA 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).

  • Seat cushion having an edge portion, to be used for a seat of saddle-riding vehicle, and manufacturing method thereof
    Patent number: 11753097
    Abstract: A seat cushion includes an edge portion and a three-dimensional fiber structure including core-sheath fusible fibers and skeletal fibers thermally fused at intersections thereof. The sheaths of the core-sheath fusible fibers are made of a thermoplastic elastomer to fuse the intersections and form a bulging portion at each of the fused intersections. The skeletal fibers and the cores of the core-sheath fusible fibers are made of a non-elastomer resin. The skeletal fibers are crimp-processed bulky fibers, and a fineness of the skeletal fibers and a fineness of the core-sheath fusible fibers are in a range of 1 to 200 dtex. The seat cushion has a layered structure including a plurality of layers fused together, each of the layers has the three-dimensional fiber structure, and the seat cushion has a density distribution based on regional variations of the layered structure and a stiffness distribution that depends on the density distribution.
    Type: Grant
    Filed: March 24, 2022
    Date of Patent: September 12, 2023
    Assignee: YAMAHA HATSUDOKI KABUSHIKI KAISHA
    Inventors: Hideyoshi Sato, Tetsuya Mashiko, Sho Kakuta, Naoki Kinomoto, Yusuke Aoyama, Shigeyuki Ozawa, Mikito Yokoyama
  • SEAT CUSHION HAVING AN EDGE PORTION, TO BE USED FOR A SEAT OF SADDLE-RIDING VEHICLE, AND MANUFACTURING METHOD THEREOF
    Publication number: 20220306228
    Abstract: A seat cushion includes an edge portion and a three-dimensional fiber structure including core-sheath fusible fibers and skeletal fibers thermally fused at intersections thereof. The sheaths of the core-sheath fusible fibers are made of a thermoplastic elastomer to fuse the intersections and form a bulging portion at each of the fused intersections. The skeletal fibers and the cores of the core-sheath fusible fibers are made of a non-elastomer resin. The skeletal fibers are crimp-processed bulky fibers, and a fineness of the skeletal fibers and a fineness of the core-sheath fusible fibers are in a range of 1 to 200 dtex. The seat cushion has a layered structure including a plurality of layers fused together, each of the layers has the three-dimensional fiber structure, and the seat cushion has a density distribution based on regional variations of the layered structure and a stiffness distribution that depends on the density distribution.
    Type: Application
    Filed: March 24, 2022
    Publication date: September 29, 2022
    Inventors: Hideyoshi SATO, Tetsuya MASHIKO, Sho KAKUTA, Naoki KINOMOTO, Yusuke AOYAMA, Shigeyuki OZAWA, Mikito YOKOYAMA