Patents by Inventor Hiroaki Inoueo

Hiroaki Inoueo 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).

  • Hybrid machine with hydraulic drive device
    Patent number: 6962050
    Abstract: A hybrid machine with a hydraulic drive device having hydraulic actuators allowed to operate against and by external loads is provided. To this end, the hybrid machine comprises hydraulic cylinders (7), first hydraulic pumps (P1) connected, with closed circuits, to head side pressure receiving chambers (7S) and bottom side pressure receiving chambers (7L) of the hydraulic cylinders (7), and second hydraulic pumps (P2) connected, with open circuits, to the bottom side pressure receiving chambers (7L) and an external oil chamber (10), wherein the first and second hydraulic pumps (P1, P2) are connected to electric motors (M) so as to be driven.
    Type: Grant
    Filed: May 18, 2001
    Date of Patent: November 8, 2005
    Assignee: Komatsu Ltd.
    Inventors: Hikosaburo Hiraki, Koichiro Itow, Hiroaki Inoueo
  • Hbrid machine with hydraulic drive device
    Publication number: 20030097837
    Abstract: A hybrid machine with a hydraulic drive device having hydraulic actuators allowed to operate against and by external loads is provided. To this end, the hybrid machine comprises hydraulic cylinders (7), first hydraulic pumps (P1) connected, with closed circuits, to head side pressure receiving chambers (7S) and bottom side pressure receiving chambers (7L) of the hydraulic cylinders (7), and second hydraulic pumps (P2) connected, with open circuits, to the bottom side pressure receiving chambers (7L) and an external oil chamber (10), wherein the first and second hydraulic pumps (P1, P2) are connected to electric motors (M) so as to be driven.
    Type: Application
    Filed: November 1, 2002
    Publication date: May 29, 2003
    Inventors: Hikosaburo Hiraki, Koichiro Itow, Hiroaki Inoueo