Patents by Inventor Nathaniel Steven Doy

Nathaniel Steven Doy 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).

  • Patent number: 10202975
    Abstract: A method for determining cavitation in a pump is disclosed. The method includes detecting, by a sensor, a pressure of a fluid pumped by the pump and determining, by a controller, whether the pressure exceeds a pressure range. Cavitation is determined when the pressure exceeds the pressure range. The method includes selectively incrementing or decrementing, by the controller, a counter value of a counter based on determining whether the pressure exceeds the pressure range. The counter value is incremented when the pressure exceeds the pressure range, and decremented when the pressure does not exceed the pressure range. The method includes determining, by the controller, whether the counter value exceeds a threshold value, and generating, by the controller, an alert when the counter value exceeds the threshold value and causing, by the controller, the alert to be displayed via a display.
    Type: Grant
    Filed: August 29, 2016
    Date of Patent: February 12, 2019
    Assignee: Caterpillar Inc.
    Inventor: Nathaniel Steven Doy
  • Publication number: 20180058443
    Abstract: A method for determining cavitation in a pump is disclosed. The method includes detecting, by a sensor, a pressure of a fluid pumped by the pump and determining, by a controller, whether the pressure exceeds a pressure range. Cavitation is determined when the pressure exceeds the pressure range. The method includes selectively incrementing or decrementing, by the controller, a counter value of a counter based on determining whether the pressure exceeds the pressure range. The counter value is incremented when the pressure exceeds the pressure range, and decremented when the pressure does not exceed the pressure range. The method includes determining, by the controller, whether the counter value exceeds a threshold value, and generating, by the controller, an alert when the counter value exceeds the threshold value and causing, by the controller, the alert to be displayed via a display.
    Type: Application
    Filed: August 29, 2016
    Publication date: March 1, 2018
    Applicant: Caterpillar Inc.
    Inventor: Nathaniel Steven Doy
  • Patent number: 9593461
    Abstract: A control system for a machine is disclosed. The control system may have a first cylinder operatively connected between a first side of a work tool and an undercarriage of the machine, a second cylinder operatively connected between a second side of the work tool and the undercarriage of the machine, and one or more electro-hydraulic valves configured to selectively regulate flow of pressurized fluid to the cylinders. The control system may also have a controller configured to determine a difference between a desired pitch of the work tool and an actual pitch of the work tool, and compare the difference to a threshold value. The controller may also be configured to move the one or more electro-hydraulic valves to change the flow of pressurized fluid to at least one of the first and second cylinders to adjust the actual pitch of the work tool to the desired pitch, based on the comparison.
    Type: Grant
    Filed: May 19, 2014
    Date of Patent: March 14, 2017
    Assignee: Caterpillar Inc.
    Inventors: Joseph Leo Faivre, Nathaniel Steven Doy
  • Publication number: 20150330057
    Abstract: A control system for a machine is disclosed. The control system may have a first cylinder operatively connected between a first side of a work tool and an undercarriage of the machine, a second cylinder operatively connected between a second side of the work tool and the undercarriage of the machine, and one or more electro-hydraulic valves configured to selectively regulate flow of pressurized fluid to the cylinders. The control system may also have a controller configured to determine a difference between a desired pitch of the work tool and an actual pitch of the work tool, and compare the difference to a threshold value. The controller may also be configured to move the one or more electro-hydraulic valves to change the flow of pressurized fluid to at least one of the first and second cylinders to adjust the actual pitch of the work tool to the desired pitch, based on the comparison.
    Type: Application
    Filed: May 19, 2014
    Publication date: November 19, 2015
    Applicant: Caterpillar Inc.
    Inventors: Joseph Leo Faivre, Nathaniel Steven Doy