Patents by Inventor Koji KASUGAI

Koji KASUGAI 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).

  • Impact wrench
    Patent number: 11780060
    Abstract: An anvil receives less stress around a rectangular prism and has higher durability. An impact wrench includes a motor, a hammer rotatable by the motor, a body accommodating the motor and the hammer, and an anvil protruding frontward from the body and to be struck in a rotation direction by the hammer. The anvil includes a blade to be in contact with the hammer, a cylinder located frontward from the blade, a rectangular prism located frontward from the cylinder, at least one chamfered surface each at an edge of the rectangular prism, and a concave on a rear end of the at least one chamfered surface.
    Type: Grant
    Filed: July 14, 2020
    Date of Patent: October 10, 2023
    Assignee: MAKITA CORPORATION
    Inventors: Kihiro Kusumoto, Tokuo Hirabayashi, Yuya Sano, Koji Kasugai
  • IMPACT WRENCH
    Publication number: 20210060741
    Abstract: An anvil receives less stress around a rectangular prism and has higher durability. An impact wrench includes a motor, a hammer rotatable by the motor, a body accommodating the motor and the hammer, and an anvil protruding frontward from the body and to be struck in a rotation direction by the hammer. The anvil includes a blade to be in contact with the hammer, a cylinder located frontward from the blade, a rectangular prism located frontward from the cylinder, at least one chamfered surface each at an edge of the rectangular prism, and a concave on a rear end of the at least one chamfered surface.
    Type: Application
    Filed: July 14, 2020
    Publication date: March 4, 2021
    Applicant: MAKITA CORPORATION
    Inventors: Kihiro KUSUMOTO, Tokuo HIRABAYASHI, Yuya SANO, Koji KASUGAI