Patents by Inventor Kakuichi Furukawa

Kakuichi Furukawa 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).

  • Working machine with crawler
    Patent number: 10618577
    Abstract: A working machine with a crawler includes a lower traveling body having a pair of crawlers, an upper turning body, an extension beam installed rotatably to be parallel in a longitudinal direction of the crawler, a fitting portion opened in a side frame of the crawler, a fixing pin fixing the extension beam to the side frame, a fixing pin insertion hole, a fixing pin fitting hole, and a reinforcement rib, in which the extension beam extends to be inserted into the fitting portion, and the reinforcement rib is provided at a center portion of an opening of the fitting portion, and the fixing pin fitting hole is disposed at a position which is deviated from an imaginary center line extending along a longitudinal direction of the fitting portion from the center portion and does not interfere with the reinforcement rib.
    Type: Grant
    Filed: August 12, 2019
    Date of Patent: April 14, 2020
    Assignee: SUMITOMO HEAVY INDUSTRIES CONSTRUCTION CRANES CO., LTD.
    Inventors: Jacinda Ng, Kakuichi Furukawa, Shingo Tanimoto
  • WORKING MACHINE WITH CRAWLER
    Publication number: 20190359267
    Abstract: A working machine with a crawler includes a lower traveling body having a pair of crawlers, an upper turning body, an extension beam installed rotatably to be parallel in a longitudinal direction of the crawler, a fitting portion opened in a side frame of the crawler, a fixing pin fixing the extension beam to the side frame, a fixing pin insertion hole, a fixing pin fitting hole, and a reinforcement rib, in which the extension beam extends to be inserted into the fitting portion, and the reinforcement rib is provided at a center portion of an opening of the fitting portion, and the fixing pin fitting hole is disposed at a position which is deviated from an imaginary center line extending along a longitudinal direction of the fitting portion from the center portion and does not interfere with the reinforcement rib.
    Type: Application
    Filed: August 12, 2019
    Publication date: November 28, 2019
    Inventors: Jacinda Ng, Kakuichi Furukawa, Shingo Tanimoto