Patents by Inventor David Loren MAKIS

David Loren MAKIS 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).

  • Hydraulic hybrid propel circuit with hydrostatic option and method of operation
    Patent number: 10408237
    Abstract: A hydraulic system for a mobile work vehicle is configurable in a hybrid mode and a hydrostatic mode. The hydraulic system includes a pump/motor, a propel circuit, a pump, a hydraulic accumulator, and an accessory circuit. The pump/motor is adapted to exchange power with a drive train of the mobile work vehicle. The propel circuit is adapted to exchange hydraulic fluid power with the pump/motor. The pump is adapted to transfer power from a prime mover of the mobile work vehicle to the propel circuit. The hydraulic accumulator is adapted to exchange hydraulic fluid power via an accumulator isolation valve with the propel circuit when the hydraulic system is configured in the hybrid mode. The accessory circuit is adapted to receive hydraulic fluid power from the hydraulic accumulator, at least when the hydraulic system is configured in the hydrostatic mode and the accumulator isolation valve is closed.
    Type: Grant
    Filed: October 26, 2015
    Date of Patent: September 10, 2019
    Assignee: Eaton Intelligent Power Limited
    Inventors: Timothy Isaac Meehan, Michael William Olson, David Loren Makis
  • HYDRAULIC HYBRID PROPEL CIRCUIT WITH HYDROSTATIC OPTION AND METHOD OF OPERATON
    Publication number: 20170335867
    Abstract: A hydraulic system for a mobile work vehicle is configurable in a hybrid mode and a hydrostatic mode. The hydraulic system includes a pump/motor, a propel circuit, a pump, a hydraulic accumulator, and an accessory circuit. The pump/motor is adapted to exchange power with a drive train of the mobile work vehicle. The propel circuit is adapted to exchange hydraulic fluid power with the pump/motor. The pump is adapted to transfer power from a prime mover of the mobile work vehicle to the propel circuit. The hydraulic accumulator is adapted to exchange hydraulic fluid power via an accumulator isolation valve with the propel circuit when the hydraulic system is configured in the hybrid mode. The accessory circuit is adapted to receive hydraulic fluid power from the hydraulic accumulator, at least when the hydraulic system is configured in the hydrostatic mode and the accumulator isolation valve is closed.
    Type: Application
    Filed: October 26, 2015
    Publication date: November 23, 2017
    Applicant: EATON CORPORATION
    Inventors: Timothy Isaac MEEHAN, Michael William OLSON, David Loren MAKIS
  • Electronics enclosure
    Patent number: D804438
    Type: Grant
    Filed: October 7, 2015
    Date of Patent: December 5, 2017
    Assignee: EATON CORPORATION
    Inventors: David Loren Makis, Rajkiran Bhagwat Rokade