Patents by Inventor David Alan Stephenson

David Alan Stephenson 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).

  • Cylinder Bore With Selective Surface Treatment And Method of Making The Same
    Publication number: 20130291823
    Abstract: A cylinder bore with selective surface treatment includes a longitudinal axis and a cylindrical wall extending along the longitudinal axis, the cylindrical wall including first and second end portions and a middle portion positioned between the first and second end portions, the middle portion having a greater surface roughness than at least one of the first and second end portions.
    Type: Application
    Filed: May 1, 2012
    Publication date: November 7, 2013
    Applicant: FORD GLOBAL TECHNOLOGIES, LLC
    Inventors: Rodney G. Whitbeck, David Alan Stephenson, Keith Raymond Bartle, David Garrett Coffman
  • Method of making a barbed surface for receiving a thermal spray coating and the surface made by the method
    Patent number: 8534256
    Abstract: A method is disclosed for preparing a surface for mechanically securing a spray coating to a surface. A first series of grooves formed in the surface are intersected with a second series of grooves formed in the surface. A plurality of barbs are formed at the intersections. The spray coating is mechanically secured to the barbs that overhang the first series of grooves. The surface includes the first series of grooves and the second series of groves that intersect the first series of groves. The second series of groves form an undercut portion, or barb, at the intersections of the grooves that mechanically anchor the spray coating.
    Type: Grant
    Filed: August 29, 2011
    Date of Patent: September 17, 2013
    Assignee: Ford Global Technologies, LLC
    Inventors: Rodney G. Whitbeck, Keith Raymond Bartle, David Alan Stephenson, James William Perry
  • Method of Making a Barbed Surface for Receiving a Thermal Spray Coating and the Surface Made by the Method
    Publication number: 20130047947
    Abstract: A method is disclosed for preparing a surface for mechanically securing a spray coating to a surface. A first series of grooves formed in the surface are intersected with a second series of grooves formed in the surface. A plurality of barbs are formed at the intersections. The spray coating is mechanically secured to the barbs that overhang the first series of grooves. The surface includes the first series of grooves and the second series of groves that intersect the first series of groves. The second series of groves form an undercut portion, or barb, at the intersections of the grooves that mechanically anchor the spray coating.
    Type: Application
    Filed: August 29, 2011
    Publication date: February 28, 2013
    Applicant: FORD GLOBAL TECHNOLOGIES, LLC
    Inventors: Rodney G. Whitbeck, Keith Raymond Bartle, David Alan Stephenson, James William Perry