Patents by Inventor Mark R Hammer

Mark R Hammer 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).

  • Heat exchanger design based on partial stain energy density ratio
    Patent number: 7207378
    Abstract: A heat exchanger assembly that addresses the thermal cycling problem to increase the durability of the heat exchanger core by fabricating at least the tube next adjacent to each of the reinforcing members with a cross section adjacent each of the headers including a radius having a partial maximum tube strain energy density and fabricating each of the reinforcing members with a connection section adjacent each of the headers having a reinforcement with a partial maximum strain energy density greater than the partial maximum strain energy density of the adjacent tube.
    Type: Grant
    Filed: March 24, 2005
    Date of Patent: April 24, 2007
    Assignee: Delphi Technologies, Inc.
    Inventors: Karl Paul Kroetsch, Brian M. Hartman, Mark R Hammer