Patents by Inventor Masami Okubo

Masami Okubo 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: 11821359
    Abstract: A V8 engine, each bank of which is configured such that four crank pins connected to four piston pins via a connecting rod are positioned at 90° intervals when viewed from one end of a crankshaft. The four crank pins on the bank side are offset by 60° relative to the four crank pins on the bank side when viewed from the one end.
    Type: Grant
    Filed: February 26, 2020
    Date of Patent: November 21, 2023
    Assignee: HONDA MOTOR CO., LTD.
    Inventors: Takeshi Okada, Tatsuya Kuroda, Masami Okubo
  • Publication number: 20230109196
    Abstract: A V8 engine, each bank of which is configured such that four crank pins connected to four piston pins via a connecting rod are positioned at 90° intervals when viewed from one end of a crankshaft. The four crank pins on the bank side are offset by 60° relative to the four crank pins on the bank side when viewed from the one end.
    Type: Application
    Filed: February 26, 2020
    Publication date: April 6, 2023
    Inventors: Takeshi Okada, Tatsuya Kuroda, Masami Okubo
  • Publication number: 20230029328
    Abstract: An engine cover of an outboard motor includes an upper cover and a lower cover that are vertically separable. A fixing belt capable of fixing the upper cover and the lower cover to each other is attached to the rear end of the engine cover. The upper cover includes a belt holding portion that holds the fixing belt. The belt holding portion includes a holding frame that forms a belt insertion hole. A head portion of the fixing belt includes a pair of contact portions that come into contact with upper surfaces of a pair of first frame portions of the holding frame.
    Type: Application
    Filed: July 18, 2022
    Publication date: January 26, 2023
    Inventors: Kunihiro Kitsu, Kazuyoshi Sato, Haruhiko Komatsu, Masami Okubo
  • Publication number: 20220252000
    Abstract: An engine includes: a crankshaft disposed vertically; a piston that is connected to the crankshaft via a connecting rod and reciprocates in a cylinder; a cylinder head forming a combustion chamber of the cylinder at an end face of a movable portion of the piston; an intake valve and an exhaust valve disposed at the cylinder head, the intake valve being configured to take in fuel-air mixture, which is a mixture of fuel and air, the exhaust valve being configured to exhaust the fuel-air mixture; a low-rotation rocker arm (rocker arm) that drives the intake valve and the exhaust valve by rotation of a cam shaft; and a rocker shaft that supports the low-rotation rocker arm such that the low-rotation rocker arm is swingable, and an oil holding portion extending in an axial direction of the rocker shaft is provided between the rocker shaft and the low-rotation rocker arm.
    Type: Application
    Filed: December 28, 2021
    Publication date: August 11, 2022
    Inventors: Shohei Kono, Koji Nakagawa, Koji Kasai, Takaaki Kato, Masami Okubo, Gendai Matsuoka, Hideta Muramatsu