Patents by Inventor Michael Parry Liechty

Michael Parry Liechty 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).

  • Hybrid power system with variable speed genset
    Patent number: 8987939
    Abstract: A hybrid power system is disclosed. The hybrid power system may include a primary power source configured to provide a primary power, and an energy storage device coupled to the primary power source, the energy storage device configured to store excess primary power provided by the primary power source. The hybrid power system may further include a variable speed genset, the variable speed genset including a secondary power source configured to operate at a variable rotor speed to provide a secondary power responsive to power requirements of a load. The hybrid power system may also include a central controller communicatively coupled to the primary power source, the energy storage device, and the variable speed genset, the central controller configured to control the primary power source, the energy storage device, and the variable speed genset based on the power requirements of the load.
    Type: Grant
    Filed: November 30, 2007
    Date of Patent: March 24, 2015
    Assignee: Caterpillar Inc.
    Inventors: Dachuan Yu, Michael Parry Liechty, Mahesh Sitaram Illindala, Matthew Thomas Muller
  • Hybrid power system with variable speed genset
    Publication number: 20090140576
    Abstract: A hybrid power system is disclosed. The hybrid power system may include a primary power source configured to provide a primary power, and an energy storage device coupled to the primary power source, the energy storage device configured to store excess primary power provided by the primary power source. The hybrid power system may further include a variable speed genset, the variable speed genset including a secondary power source configured to operate at a variable rotor speed to provide a secondary power responsive to power requirements of a load. The hybrid power system may also include a central controller communicatively coupled to the primary power source, the energy storage device, and the variable speed genset, the central controller configured to control the primary power source, the energy storage device, and the variable speed genset based on the power requirements of the load.
    Type: Application
    Filed: November 30, 2007
    Publication date: June 4, 2009
    Inventors: Dachuan Yu, Michael Parry Liechty, Mahesh Sitaram Illindala, Matthew Thomas Muller