Patents by Inventor Doug Huffer

Doug Huffer 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: 7152757
    Abstract: A coupling for connection of a tube comprises a coupling housing which includes a first end into which the tube is inserted, a clamping ring which is positioned in the coupling housing against a first conical surface, a sealing ring which is positioned in the coupling housing, and a return ring which is positioned in the coupling housing between the clamping ring and a second end of the housing adjacent a second conical surface that is tapered opposite to the first conical surface. The return ring is expandable and comprises a central aperture which is smaller than the external diameter of the tube. Accordingly, when the tube is pushed into the coupling housing and forced through the return ring, the return ring will expand and move along the second conical surface.
    Type: Grant
    Filed: July 14, 2004
    Date of Patent: December 26, 2006
    Assignee: Maytag Corporation
    Inventors: Doug Huffer, Fred Lowery, Gary Petersen, Keith Gausmann, Samuel Marino, Gary Myers, Jamison J. Float, Jay F. Perkins, Steve Pever, Robert Hayes, Michael T. Kopczewski, Paul E. Hsu, Douglas G. Schaefer, Brent L. Burchfield, Jeffrey T. DeBord
  • Publication number: 20050167440
    Abstract: A coupling for connection of a tube comprises a coupling housing which includes a first end into which the tube is inserted, a clamping ring which is positioned in the coupling housing against a first conical surface, a sealing ring which is positioned in the coupling housing, and a return ring which is positioned in the coupling housing between the clamping ring and a second end of the housing adjacent a second conical surface that is tapered opposite to the first conical surface. The return ring is expandable and comprises a central aperture which is smaller than the external diameter of the tube. Accordingly, when the tube is pushed into the coupling housing and forced through the return ring, the return ring will expand and move along the second conical surface.
    Type: Application
    Filed: July 14, 2004
    Publication date: August 4, 2005
    Inventors: Doug Huffer, Fred Lowery, Gary Petersen, Keith Gausmann, Samuel Marino, Gary Myers, Jamison Float, Jay Perkins, Steve Pever, Robert Hayes, Michael Kopezewski, Paul Hsu, Douglas Schaefer, Brent Burchfield, Jeffrey DeBord