Patents by Inventor Toshiakira TAKAHASHI

Toshiakira TAKAHASHI 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).

  • Operational data storage device
    Patent number: 11015321
    Abstract: An operational data storage device mounted on an hydraulic excavator is programmed to store operational data including stroke data and movement quantity data. The stroke data represent input operations by the operator of the hydraulic excavator through electric operating levers, and the movement quantity data represent movement quantities of operating members for a front working device equipped with the hydraulic excavator, the operating member being operated according to the input operations. The operational data storage device stores, in an initial state, the operational data in the volatile storage section, generates a save and exit signal if a posture parameter detected at a posture detection sensor included in the hydraulic excavator exceeds a predetermined posture threshold, and responsive to the save and exit signal, switches a write destination of the operational data from the volatile storage section to the non-volatile storage section.
    Type: Grant
    Filed: February 13, 2018
    Date of Patent: May 25, 2021
    Assignee: HITACHI CONSTRUCTION MACHINERY CO., LTD.
    Inventors: Takeshi Shiina, Hiroshi Kanezawa, Hirofumi Migita, Shintaro Doi, Toshiakira Takahashi, Masatoshi Sakurai, Yoshitaka Yanase, Akiko Maeno
  • OPERATIONAL DATA STORAGE DEVICE
    Publication number: 20190186104
    Abstract: An operational data storage device mounted on an hydraulic excavator is programmed to store operational data including stroke data and movement quantity data. The stroke data represent input operations by the operator of the hydraulic excavator through electric operating levers, and the movement quantity data represent movement quantities of operating members for a front working device equipped with the hydraulic excavator, the operating member being operated according to the input operations. The operational data storage device stores, in an initial state, the operational data in the volatile storage section, generates a save and exit signal if a posture parameter detected at a posture detection sensor included in the hydraulic excavator exceeds a predetermined posture threshold, and responsive to the save and exit signal, switches a write destination of the operational data from the volatile storage section to the non-volatile storage section.
    Type: Application
    Filed: February 13, 2018
    Publication date: June 20, 2019
    Inventors: Takeshi SHIINA, Hiroshi KANEZAWA, Hirofumi MIGITA, Shintaro DOI, Toshiakira TAKAHASHI, Masatoshi SAKURAI, Yoshitaka YANASE, Akiko MAENO