Patents by Inventor Ryoji Onigata

Ryoji Onigata 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).

  • Balancer device for an internal combustion engine
    Patent number: 10138979
    Abstract: A balancer device for an internal combustion engine is provided, wherein the drive mechanism 8 and the oil pump 3 are arranged on the side opposite to driven balancer weight 135 in the axial direction of the driven balancer shaft 5.
    Type: Grant
    Filed: September 10, 2015
    Date of Patent: November 27, 2018
    Assignee: HITACHI AUTOMOTIVE SYSTEMS, LTD.
    Inventor: Ryoji Onigata
  • BALANCER DEVICE FOR AN INTERNAL COMBUSTION ENGINE
    Publication number: 20160258507
    Abstract: A balancer device for an internal combustion engine is provided, wherein the drive mechanism 8 and the oil pump 3 are arranged on the side opposite to driven balancer weight 135 in the axial direction of the driven balancer shaft 5.
    Type: Application
    Filed: September 10, 2015
    Publication date: September 8, 2016
    Applicant: HITACHI AUTOMOTIVE SYSTEMS, LTD.
    Inventor: Ryoji ONIGATA
  • Engine balancer
    Patent number: 7637240
    Abstract: An engine balancer including a rotatable drive balance shaft having a first balance weight and a first portion formed at a position offset from the first balance weight in an axial direction of the drive balance shaft, a drive gear disposed on the drive balance shaft, a driven gear meshed with the drive gear, a driven balance shaft parallel to the drive balance shaft and rotatable with the driven gear, the driven balance shaft including a second balance weight and a second portion formed at a position offset from the second balance weight in an axial direction of the driven balance shaft. The second portion of the driven balance shaft is constructed to produce a moment of inertia less than a moment of inertia that is produced in the first portion of the drive balance shaft.
    Type: Grant
    Filed: July 2, 2007
    Date of Patent: December 29, 2009
    Assignee: Hitachi, Ltd.
    Inventor: Ryoji Onigata
  • Engine balancer
    Publication number: 20080009376
    Abstract: An engine balancer including a rotatable drive balance shaft having a first balance weight and a first portion formed at a position offset from the first balance weight in an axial direction of the drive balance shaft, a drive gear disposed on the drive balance shaft, a driven gear meshed with the drive gear, a driven balance shaft parallel to the drive balance shaft and rotatable with the driven gear, the driven balance shaft including a second balance weight and a second portion formed at a position offset from the second balance weight in an axial direction of the driven balance shaft. The second portion of the driven balance shaft is constructed to produce a moment of inertia less than a moment of inertia that is produced in the first portion of the drive balance shaft.
    Type: Application
    Filed: July 2, 2007
    Publication date: January 10, 2008
    Inventor: Ryoji Onigata