Patents by Inventor David M. Lomax

David M. Lomax 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: 11946225
    Abstract: One embodiment of a hydraulic system for a machine has a first hydraulic circuit including a first pump coupled to a first hydraulic actuator configured to move a first implement of the machine. A second hydraulic circuit includes a second pump coupled to a second hydraulic actuator configured to move a second implement. An electric motor mechanically couples to the first pump and to the second pump. An operator interface receives input from an operator requesting movement of the first and second implements. A controller communicatively coupled to the electric motor and to the operator interface determines, based on the requested movement of the first and second implements respectively, first and second flow allocations respectively for the first and second pumps and determines respective target displacements for the first and second pumps.
    Type: Grant
    Filed: May 28, 2021
    Date of Patent: April 2, 2024
    Assignee: Caterpillar Inc.
    Inventors: Kalpeshkumar N Patel, Darren A Blum, Aleksandar M Egelja, Barrett A Flinn, Ryan P McEnaney, Trung Q Nguyen, David J Lomax
  • Patent number: D342470
    Type: Grant
    Filed: October 19, 1992
    Date of Patent: December 21, 1993
    Inventors: Paul Lomax, Jr., David M. Lomax, Paul A. Lomax