Patents by Inventor Thomas A. Fosdal

Thomas A. Fosdal 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).

  • Carbon media filter element
    Patent number: 7070641
    Abstract: A carbon media filter element with urethane frame and seal has a border member composed of urethane providing a combined structural frame and seal extending along the perimeter and providing both the support frame for the media and a seal along the ends of the media sheet retaining carbon granules between backing layers and preventing escape of carbon granules out of the end. Manufacturing apparatus and methods are provided.
    Type: Grant
    Filed: December 3, 2003
    Date of Patent: July 4, 2006
    Assignee: Fleetguard, Inc.
    Inventors: Larry T. Gunderson, Eric Schroeder, Mark C. Schroeder, Thomas A. Fosdal, Eric A. Janikowski
  • Filter with efficiently sealed end
    Patent number: 6902598
    Abstract: A filter element has a resiliently compressible end cap at a first axial end sealing the filter and providing sealed engagement with a flow tube.
    Type: Grant
    Filed: May 2, 2003
    Date of Patent: June 7, 2005
    Assignee: Fleetguard, Inc.
    Inventors: Larry T. Gunderson, Thomas A. Fosdal, Gregory J. Schoenmann, Kelly R. Schmitz
  • Filter coating, winding, finishing and manufacturing system
    Patent number: 6887343
    Abstract: A coating system (66, 68), winding system (158), finishing system (274, 276) and manufacturing system (FIGS. 6, 7, 22-29) is provided for spiral-wound fluted filter media (74, 130).
    Type: Grant
    Filed: December 20, 2002
    Date of Patent: May 3, 2005
    Assignee: Fleetguard, Inc.
    Inventors: Murray R. Schukar, Brian K. Fillbach, Gary J. Frank, Craig A. Clayton, Douglas P. Marquis, Matthew P. Henrichsen, Robert K. Miller, William C. Haberkamp, Darryl J. Gust, Kurt M. A. Badeau, Steven D. Stokstad, Travis E. Goodlund, Thomas A. Fosdal, O. Michael Bowling, Randolph G. Zoran
  • Filter with efficiently sealed end
    Publication number: 20040216434
    Abstract: A filter element has a resiliently compressible end cap at a first axial end sealing the filter and providing sealed engagement with a flow tube.
    Type: Application
    Filed: May 2, 2003
    Publication date: November 4, 2004
    Inventors: Larry T. Gunderson, Thomas A. Fosdal, Gregory J. Schoenmann, Kelly R. Schmitz
  • Filter coating, winding, finishing and manufacturing system
    Publication number: 20040118771
    Abstract: A coating system (66, 68), winding system (158), finishing system (274, 276) and manufacturing system (FIGS. 6,7, 22-29) is provided for spiral-wound fluted filter media (74, 130).
    Type: Application
    Filed: December 20, 2002
    Publication date: June 24, 2004
    Inventors: Murray R. Schukar, Brian K. Fillbach, Gary J. Frank, Craig A. Clayton, Douglas P. Marquis, Matthew P. Henrichsen, Robert K. Miller, William C. Haberkamp, Darryl J. Gust, Kurt M. A. Badeau, Steven D. Stokstad, Travis E. Goodlund, Thomas A. Fosdal, O. Michael Bowling, Randolph G. Zoran
  • Filter with efficiently sealed end
    Patent number: RE41713
    Abstract: A filter element has a resiliently compressible end cap at a first axial end sealing the filter and providing sealed engagement with a flow tube.
    Type: Grant
    Filed: June 7, 2007
    Date of Patent: September 21, 2010
    Assignee: Cummins Filtration IP Inc.
    Inventors: Larry T. Gunderson, Thomas A. Fosdal, Gregory J. Schoenmann, Kelly R. Schmitz
  • Filter with efficiently sealed end
    Patent number: RE42174
    Abstract: A filter element has a resiliently compressible end cap at a first axial end sealing the filter and providing sealed engagement with a flow tube. A filter assembly comprising a filter media element having a first end and a second end, a first end cap disposed at the first end, and a second end cap disposed at the second end. The filter media element is shaped to form a hollow interior extending from the first end to the second end. The hollow interior defines an inner boundary of the element and the outer surface of the element defines an outer boundary. The second end cap covers both the filter media element and the hollow interior at the second end.
    Type: Grant
    Filed: January 30, 2009
    Date of Patent: March 1, 2011
    Assignee: Cummins Filtration IP, Inc.
    Inventors: Larry T. Gunderson, Thomas A. Fosdal, Gregory J. Schoenmann, Kelly R. Schmitz