Patents by Inventor Hiromitsu KANIWA

Hiromitsu KANIWA 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).

  • Construction machine
    Patent number: 12534869
    Abstract: A working mechanism (8) includes a lower boom (9), an upper boom (10), a middle arm (11), an arm (12), a working tool (13), a working tool cylinder (22), and a link (16). The working tool cylinder (22) is disposed on a lower surface (12B) side of the arm (12), and a cylinder guard (23) is fixed on a first link (17) of the link (16). The cylinder guard (23) is rotationally displaced in synchronization with an expanding or contracting operation of the working tool cylinder (22) and is interposed between the working tool (13) and the working tool cylinder (22) to protect the working tool cylinder (22).
    Type: Grant
    Filed: February 10, 2022
    Date of Patent: January 27, 2026
    Assignee: HITACHI CONSTRUCTION MACHINERY CO., LTD.
    Inventors: Daiki Ogawa, Shunsuke Asahi, Hiromitsu Kaniwa, Takuto Sasaki, Tsukuru Tendo
  • CONSTRUCTION MACHINE
    Publication number: 20230332372
    Abstract: A working mechanism (8) includes a lower boom (9), an upper boom (10), a middle arm (11), an arm (12), a working tool (13), a working tool cylinder (22), and a link (16). The working tool cylinder (22) is disposed on a lower surface (12B) side of the arm (12), and a cylinder guard (23) is fixed on a first link (17) of the link (16). The cylinder guard (23) is rotationally displaced in synchronization with an expanding or contracting operation of the working tool cylinder (22) and is interposed between the working tool (13) and the working tool cylinder (22) to protect the working tool cylinder (22).
    Type: Application
    Filed: February 10, 2022
    Publication date: October 19, 2023
    Inventors: Daiki OGAWA, Shunsuke ASAHI, Hiromitsu KANIWA, Takuto SASAKI, Tsukuru TENDO