Patents by Inventor M. Evan Hague

M. Evan Hague 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).

  • System and method for identifying impending hydraulic pump failure
    Patent number: 9051945
    Abstract: A system and method for predicting impending pump failure in a hydraulic system is disclosed. The system measures and compares the running and moving volumetric deficiencies of the hydraulic system as a whole and if they are not within range of each other by a predetermined threshold, the system determines that at least one of the pumps in the system is about to fail. If such a determination is made by the system, the pump displacement is at standby of each pump is then calculated and the pump with the greatest displacement at standby is determined to be the pump approaching failure. Once the pump approaching failure is identified, a signal is generated to apprise the operator or other entity to enable corrective action to be taken.
    Type: Grant
    Filed: April 30, 2012
    Date of Patent: June 9, 2015
    Assignee: Caterpillar Inc.
    Inventor: M. Evan Hague
  • System and Method for Identifying Impending Hydraulic Pump Failure
    Publication number: 20130283773
    Abstract: A system and method for predicting impending pump failure in a hydraulic system is disclosed. The system measures and compares the running and moving volumetric deficiencies of the hydraulic system as a whole and if they are not within range of each other by a predetermined threshold, the system determines that at least one of the pumps in the system is about to fail. If such a determination is made by the system, the pump displacement is at standby of each pump is then calculated and the pump with the greatest displacement at standby is determined to be the pump approaching failure. Once the pump approaching failure is identified, a signal is generated to apprise the operator or other entity to enable corrective action to be taken.
    Type: Application
    Filed: April 30, 2012
    Publication date: October 31, 2013
    Applicant: CATERPILLAR, INC.
    Inventor: M. Evan Hague