Patents by Inventor Bryan J. Hillman

Bryan J. Hillman 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).

  • Meterless Hydraulic System Having Flow Sharing and Combining Functionality
    Publication number: 20130098016
    Abstract: A hydraulic system includes a variable-displacement first pump, a variable-displacement second pump, and a first actuator selectively connected either to the first pump in a closed loop manner and not the second pump, or to the first and second pumps in a closed loop manner. The hydraulic system also includes a second actuator selectively connected either to the second pump in a closed loop manner and not the first pump, or to the first and second pumps in a closed loop manner. The hydraulic system further includes a variable-displacement rotary actuator selectively connected either to the first pump in a closed loop manner and not the second pump, or to the first and second pumps in a closed loop manner.
    Type: Application
    Filed: October 21, 2011
    Publication date: April 25, 2013
    Inventors: Patrick OPDENBOSCH, Lawrence J. Tognetti, Bryan J. Hillman
  • Meterless Hydraulic System Having Flow Sharing and Combining Functionality
    Publication number: 20130098020
    Abstract: A hydraulic system includes a variable-displacement first pump, an over-center variable-displacement first travel motor selectively connected to receive fluid pressurized by the first pump in a closed loop manner, and an over-center variable-displacement second travel motor selectively connected to receive fluid pressurized by the first pump in parallel with the first travel motor in a closed loop manner. The hydraulic system also includes a linear actuator selectively connected to receive fluid pressurized by the first pump in parallel with the first and second travel motors in a closed loop manner.
    Type: Application
    Filed: October 21, 2011
    Publication date: April 25, 2013
    Inventors: Patrick OPDENBOSCH, Lawrence J. Tognetti, Bryan J. Hillman
  • Meterless Hydraulic System Having Flow Sharing and Combining Functionality
    Publication number: 20130098019
    Abstract: A hydraulic system includes a variable-displacement first pump and a variable-displacement second pump. The hydraulic system also includes a first actuator selectively connected either to the first pump in a closed loop manner and not the second pump, to the second pump in a closed loop manner and not the first pump, or to the first and second pumps in a closed loop manner. The hydraulic system further includes a second actuator and a variable-displacement rotary actuator that are each selectively connected either to the first pump in a closed loop manner and not the second pump, to the second pump in a closed loop manner and not the first pump, or to the first and second pumps in a closed loop manner.
    Type: Application
    Filed: October 21, 2011
    Publication date: April 25, 2013
    Inventors: Patrick OPDENBOSCH, Lawrence J. Tognetti, Bryan J. Hillman