Patents by Inventor David A. Nagel, JR.

David A. Nagel, JR. 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).

  • Tube header for heat exchanger
    Patent number: 10371464
    Abstract: A tube header for a heat exchanger includes a header plate having two major dimensions defining a header plane. The header plate has a row of oblong passages extending through the header plate. Each passage is bordered by a ferrule monolithically formed with the header plate. The ferrule has a surrounding wall extending perpendicular to the header plane. A transitional area between the ferrule and the header plate has a reduced thickness that is smaller than the wall thickness of the ferrule. This transitional area provides a flexible hinge-like function for compensating dimensional changes during thermal cycles of a heat exchanger.
    Type: Grant
    Filed: July 7, 2015
    Date of Patent: August 6, 2019
    Assignee: MAHLE INTERNATIONAL GMBH
    Inventors: Bradley D. Abell, Nicholas A. Potter, Jeffrey A. Dunker, David A. Nagel, Jr.
  • TUBE HEADER FOR HEAT EXCHANGER
    Publication number: 20170010058
    Abstract: A tube header for a heat exchanger includes a header plate having two major dimensions defining a header plane. The header plate has a row of oblong passages extending through the header plate. Each passage is bordered by a ferrule monolithically formed with the header plate. The ferrule has a surrounding wall extending perpendicular to the header plane. A transitional area between the ferrule and the header plate has a reduced thickness that is smaller than the wall thickness of the ferrule. This transitional area provides a flexible hinge-like function for compensating dimensional changes during thermal cycles of a heat exchanger.
    Type: Application
    Filed: July 7, 2015
    Publication date: January 12, 2017
    Inventors: Bradley D. Abell, Nicholas A. Potter, Jeffrey A. Dunker, David A. Nagel, JR.