Patents by Inventor Daniel A. Griswold

Daniel A. Griswold 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: 10465361
    Abstract: An auxiliary flow adjustment system and method are disclosed for controlling an auxiliary hydraulic function on a machine in accordance with commands from an operator. The auxiliary flow adjustment system includes operator controls that control a hydraulic control valve. The control valve controls flow rate and flow direction to the auxiliary hydraulic function. When the auxiliary flow adjustment system is activated, the operator can use the operator controls to select a desired flow rate and flow direction for the auxiliary function and maintain the desired flow rate and direction without further use of the operator controls. When the flow adjustment system is activated while a non-zero flow rate is selected, the desired flow rate and direction can be set to the current settings. A resume control can retrieve and command the previously stored desired flow rate and direction. Controls can be used to increase and decrease the set flow rate.
    Type: Grant
    Filed: November 3, 2016
    Date of Patent: November 5, 2019
    Assignee: DEERE & COMPANY
    Inventors: Sean A. Mairet, Thomas J. Waller, Bryan Rausch, Daniel A. Griswold
  • Publication number: 20180119712
    Abstract: An auxiliary flow adjustment system and method are disclosed for controlling an auxiliary hydraulic function on a machine in accordance with commands from an operator. The auxiliary flow adjustment system includes operator controls that control a hydraulic control valve. The control valve controls flow rate and flow direction to the auxiliary hydraulic function. When the auxiliary flow adjustment system is activated, the operator can use the operator controls to select a desired flow rate and flow direction for the auxiliary function and maintain the desired flow rate and direction without further use of the operator controls. When the flow adjustment system is activated while a non-zero flow rate is selected, the desired flow rate and direction can be set to the current settings. A resume control can retrieve and command the previously stored desired flow rate and direction. Controls can be used to increase and decrease the set flow rate.
    Type: Application
    Filed: November 3, 2016
    Publication date: May 3, 2018
    Inventors: SEAN A. MAIRET, Thomas J. Waller, Bryan Rausch, Daniel A. Griswold
  • Patent number: 9815479
    Abstract: An overload protection control system and method are disclosed for an articulated dump truck having a load bin movable between loaded and unloaded positions by hydraulic cylinders of a hydraulic circuit. The overload protection control system includes a source of load data associated with the load bin. The overload protection system also includes at least one controller that receives and processes the load data to determine an overload condition associated with the load bin and determines a speed associated with the work vehicle. The speed is reduced in the overload condition.
    Type: Grant
    Filed: October 27, 2015
    Date of Patent: November 14, 2017
    Assignee: Deere & Company
    Inventors: Francois Stander, Jeremy B. Shuler, Jason J. Foley, Daniel A. Griswold, Mark J. Cherney
  • Publication number: 20170113699
    Abstract: An overload protection control system and method are disclosed for an articulated dump truck having a load bin movable between loaded and unloaded positions by hydraulic cylinders of a hydraulic circuit. The overload protection control system includes a source of load data associated with the load bin. The overload protection system also includes at least one controller that receives and processes the load data to determine an overload condition associated with the load bin and determines a speed associated with the work vehicle. The speed is reduced in the overload condition.
    Type: Application
    Filed: October 27, 2015
    Publication date: April 27, 2017
    Inventors: Francois Stander, Jeremy B. Shuler, Jason J. Foley, Daniel A. Griswold, Mark J. Cherney
  • Patent number: 7578127
    Abstract: A hydraulic system comprises a plurality of primary hydraulic circuits and a secondary hydraulic circuit for satisfying flow continuity of the primary hydraulic circuits.
    Type: Grant
    Filed: April 10, 2007
    Date of Patent: August 25, 2009
    Assignee: Deere & Company
    Inventor: Daniel A. Griswold