Patents by Inventor Akiko Yoshio

Akiko Yoshio 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).

  • Device for detecting failure of hydraulic motor, and hydraulic vehicle
    Patent number: 7082756
    Abstract: A failure detection device for a hydraulic motor of the present invention comprises a hydraulic pump 3 that is driven by a prime mover 2; a hydraulic motor 1 that is driven by hydraulic oil discharged from the hydraulic pump 3; an abnormality detection device 35 that detects an abnormal operation of the hydraulic motor 1; and a warning device 30, 39, 40 that issues a warning when the abnormal operation of the hydraulic motor 1 is detected by the abnormality detection device 35.
    Type: Grant
    Filed: December 20, 2000
    Date of Patent: August 1, 2006
    Assignee: Hitachi Construction Machinery Co., Ltd.
    Inventors: Kazuhiro Ichimura, Katsuaki Kodaka, Akiko Yoshio, legal representative, Saburou Yoshio, deceased
  • Device for detecting failure of hydraulic motor, and hydraulic vehicle
    Publication number: 20040168435
    Abstract: A failure detection device for a hydraulic motor of the present invention comprises a hydraulic pump 3 that is driven by a prime mover 2; a hydraulic motor 1 that is driven by hydraulic oil discharged from the hydraulic pump 3; an abnormality detection device 35 that detects an abnormal operation of the hydraulic motor 1; and a warning device 30, 39, 40 that issues a warning when the abnormal operation of the hydraulic motor 1 is detected by the abnormality detection device 35.
    Type: Application
    Filed: November 17, 2003
    Publication date: September 2, 2004
    Inventors: Kazuhiro Ichimura, Katsuaki Kodaka, Saburou Yoshio, Akiko Yoshio