Patents by Inventor David J. Fadden

David J. Fadden 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).

  • Patent number: 4848633
    Abstract: Disclosed is an apparatus for transporting a web about a nonlinear path without allowing the apparatus to contact the web. The apparatus includes a series of positive pressure nozzles which emit a primary jet flow of fluid in a single direction, and a secondary jet flow of fluid in a direction perpendicular to the primary flow. The two flows merge and transport the web on a cushion of air along the nonlinear path. The magnitude of the cushioned pad is controlled by a series of slide dampers which are positioned between adjacent nozzles, and the opening of these slide dampers controls the amount of exhaust from the merged flow so as to control the cushioned path. The last nozzle in the series will direct its primary flow in a direction opposite to that of the other nozzles in the series in order to maintain the overall pressure pad under the web.
    Type: Grant
    Filed: February 28, 1986
    Date of Patent: July 18, 1989
    Assignee: Thermo Electron Web Systems, Inc.
    Inventors: Kenneth G. Hagen, E. Sam Fontain, David J. Fadden, William L. Henshilwood