Patents by Inventor Ralf Gebhardt

Ralf Gebhardt 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).

  • Baking oven
    Patent number: 6044833
    Abstract: A baking oven comprises a re-circulation air heater which comprises a burner with a combustion chamber and a cross-counterflow heat exchanger disposed downstream thereof. This heat exchanger comprises serpentine heat transfer tubes which are connected to a single flue gas supply channel and a single flue gas discharge channel. The heat exchanger is fixed at only a single fixing spot in each coordinate direction of a Cartesian coordinate system.
    Type: Grant
    Filed: March 1, 1999
    Date of Patent: April 4, 2000
    Assignee: Werner & Pfleiderer Lebensmitteltechnik GmbH
    Inventors: Ralf Gebhardt, Bernd Dannenhauer, Frank Blumel