Patents by Inventor Sean James McManus

Sean James McManus 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).

  • Adhesion control system for off-highway vehicle
    Patent number: 7778747
    Abstract: A system and method for controlling adhesion of a wheel of an off-highway vehicle to a surface supporting the wheel measures a parameter of a traction motor of the off-highway vehicle driving the wheel. The parameter is analyzed to determine if wheel slip is present and the severity of the wheel slip. Some embodiments of the invention include adjusting a duty cycle of the traction motor as a function of the severity of the detected wheel slip.
    Type: Grant
    Filed: August 31, 2006
    Date of Patent: August 17, 2010
    Assignee: National Railway Equipment Co.
    Inventors: William Charles Hawkins, Sean James McManus
  • Engine start/stop control for multiple engine ohv based on operating conditions
    Patent number: 7431005
    Abstract: Operation of a second or additional engine is initiated based on throttle position, vehicle speed and output level of the operating engine or engines. A second or additional engine is stopped based on throttle position and operation of the first engine when the second or additional engine has been idling for a predetermined period of time. Idling of an engine is started or stopped based on various conditions of the vehicle, such as battery voltage, ambient air temperature, brake cylinder pressure, operator input, battery charging current, and direction input.
    Type: Grant
    Filed: August 31, 2006
    Date of Patent: October 7, 2008
    Assignee: National Railway Equipment Co.
    Inventors: William Charles Hawkins, Sean James McManus
  • ENGINE START/STOP CONTROL FOR MULTIPLE ENGINE OHV BASED ON OPERATING STATISTICS
    Publication number: 20080082247
    Abstract: Operation of a second or additional engine is initiated based on operating statistics. A second or additional engine is stopped based on operating statistics.
    Type: Application
    Filed: August 31, 2006
    Publication date: April 3, 2008
    Applicant: NATIONAL RAILWAY EQUIPMENT CO.
    Inventors: William Charles Hawkins, Sean James McManus
  • ADHESION CONTROL SYSTEM FOR OFF-HIGHWAY VEHICLE
    Publication number: 20080059112
    Abstract: A system and method for controlling adhesion of a wheel of an off-highway vehicle to a surface supporting the wheel measures a parameter of a traction motor of the off-highway vehicle driving the wheel. The parameter is analyzed to determine if wheel slip is present and the severity of the wheel slip. Some embodiments of the invention include adjusting a duty cycle of the traction motor as a function of the severity of the detected wheel slip.
    Type: Application
    Filed: August 31, 2006
    Publication date: March 6, 2008
    Applicant: NATIONAL RAILWAY EQUIPMENT CO.
    Inventors: William Charles Hawkins, Sean James McManus
  • ENGINE START/STOP CONTROL FOR MULTIPLE ENGINE OHV BASED ON OPERATING CONDITIONS
    Publication number: 20080053402
    Abstract: Operation of a second or additional engine is initiated based on throttle position, vehicle speed and output level of the operating engine or engines. A second or additional engine is stopped based on throttle position and operation of the first engine when the second or additional engine has been idling for a predetermined period of time. Idling of an engine is started or stopped based on various conditions of the vehicle, such as battery voltage, ambient air temperature, brake cylinder pressure, operator input, battery charging current, and direction input.
    Type: Application
    Filed: August 31, 2006
    Publication date: March 6, 2008
    Applicant: NATIONAL RAILWAY EQUIPMENT CO.
    Inventors: William Charles Hawkins, Sean James McManus