Patents by Inventor Masami Hideura

Masami Hideura 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).

  • Drive device of working machine
    Patent number: 6666022
    Abstract: A drive apparatus comprises an engine, a hydraulic pump, an electric motor concurrently serving as a generator, a battery, a first control device that charges the battery with the electric power generated by the electric motor concurrently serving as a generator and drives the electric motor concurrently serving as a generator using the electric power of the battery, and a controller. When the input of the hydraulic pump is smaller than the output of the engine, the engine is operated the set number of revolutions and the number of high idle revolutions. And, when the input of the hydraulic pump is larger than the output of the engine, the input of the hydraulic pump is reduced and the electric motor is operated in the electric motor action, whereby the engine output can be supplemented and the engine can be operated in the set number of revolutions.
    Type: Grant
    Filed: December 28, 2001
    Date of Patent: December 23, 2003
    Assignee: Kobelco Construction Machinery Co., Ltd.
    Inventors: Hideaki Yoshimatsu, Masami Hideura, Etsujiro Imanishi