Patents by Inventor Nathan James Clarke

Nathan James Clarke 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).

  • Steering arrangement
    Patent number: 9744986
    Abstract: A steering arrangement including a first, second, third and fourth hydraulic chamber, the first and third chambers being operable to steer in a first direction and the second and fourth chambers being operable to steer in a second direction. A pump system supplies fluid to a steering system, which is operable to supply the pressurized fluid to one or more of the first, second, third and fourth hydraulic chambers. The steering system having a first mode wherein fluid is supplied to the first and third hydraulic chambers to steer in the first direction, or pressurized fluid is supplied to the second and fourth hydraulic chambers to steer in the second direction. The steering system having a second mode to steer in the first direction, or to steer in the second direction, such that the steering ratio is higher in the second mode than in the first mode.
    Type: Grant
    Filed: July 16, 2014
    Date of Patent: August 29, 2017
    Assignee: J. C. Bamford Excavators Limited
    Inventors: Richard Frederick George Young, Nathan James Clarke, Richard Edward Cadman
  • Steering Arrangement
    Publication number: 20150021116
    Abstract: A steering arrangement including a first, second, third and fourth hydraulic chamber, the first and third chambers being operable to steer in a first direction and the second and fourth chambers being operable to steer in a second direction. A pump system supplies fluid to a steering system, which is operable to supply the pressurised fluid to one or more of the first, second, third and fourth hydraulic chambers. The steering system having a first mode wherein fluid is supplied to the first and third hydraulic chambers to steer in the first direction, or pressurised fluid is supplied to the second and fourth hydraulic chambers to steer in the second direction. The steering system having a second mode to steer in the first direction, or to steer in the second direction, such that the steering ratio is higher in the second mode than in the first mode.
    Type: Application
    Filed: July 16, 2014
    Publication date: January 22, 2015
    Applicant: J. C. Bamford Excavators Limited
    Inventors: Richard Frederick George Young, Nathan James Clarke, Richard Edward Cadman