Patents by Inventor Charles M. Mann

Charles M. Mann 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: 11938835
    Abstract: A fuel cell system includes a fuel cell generator, a rechargeable energy storage circuit, an auxiliary load, a converter circuit, and a switch circuit. The fuel cell generator is operable to generate electrical power in a stack output signal. The auxiliary load is powered by the rechargeable energy storage circuit while in a first mode, and powered by a local signal while in a second mode. The converter circuit is operable to convert the stack output signal into a plurality of recharge signals while in the first mode and in the second mode, and convert the stack output signal into the local signal while in the second mode. The switch circuit is operable switch the plurality of recharge signals to one or more electric vehicles, and switch the local signal to the auxiliary load while in the second mode.
    Type: Grant
    Filed: August 24, 2021
    Date of Patent: March 26, 2024
    Assignee: GM Global Technology Operations LLC
    Inventors: Alan B. Martin, Matthew C. Kirklin, Margarita M. Mann, William H. Pettit, Charles E. Freese, V
  • Patent number: 7258231
    Abstract: Provided is a bi-level pallet assembly wherein a pallet is mounted over another on posts supported by corner braces or on posts supported by panels therebetween so that the two pallets are married bunk-bed style together. Cargo is stored on each of the upper and lower pallets and driven by a forklift onto a cargo aircraft to double the normal cargo carrying capacity of such aircraft by utilizing formerly unused space above the first level of cargo. The bi-level pallet assembly of the invention can potentially double the cargo capacity of such aircraft and free up cargo aircraft to meet other demands with a considerable savings of dollars over traditional deployment costs.
    Type: Grant
    Filed: May 17, 2002
    Date of Patent: August 21, 2007
    Assignee: United States of America as represented by the Secretary of the Air Force
    Inventors: Robert O. Wertz, Charles A. Vatcher, Charles M. Mann, Udo Kaltenthaler