Patents by Inventor Darrell R. Hoffman

Darrell R. Hoffman 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).

  • AIR-CONDITIONER FOR USE WITH TRAILER REFRIGERATION UNIT
    Publication number: 20110126566
    Abstract: A refrigerated freight vehicle includes a tractor truck with a cab interior, a trailer presenting a chamber, and a cooling system to refrigerate the chamber and cool the cab. The cooling system includes a powered compressor assembly, a trailer evaporator, and a truck evaporator, with the compressor assembly operable to circulate refrigerant through the evaporators.
    Type: Application
    Filed: November 30, 2009
    Publication date: June 2, 2011
    Inventors: Jerry D. Jones, Michael D. Hoffman, Darrell R. Hoffman