Patents by Inventor Paul Francin

Paul Francin 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).

  • System for reducing radial leaks in a regenerative air heater for thermal equipment
    Patent number: 6091061
    Abstract: The invention relates to a system for reducing radial leaks in an air heater for thermal equipment, the heater being of the type including a rotor fitted with a plurality of heater elements supported by diaphragms, a stator constituted by a leakproof metal case, and radial sealing means including hinged sector plates positioned over the heater elements together with radial gaskets provided on the diaphragms.
    Type: Grant
    Filed: February 1, 1999
    Date of Patent: July 18, 2000
    Assignee: Alstom Energy Systems SA
    Inventors: Philippe Dreisler, Paul Francin, Jean-Claude Semedard