Patents by Inventor Steven T. Holtan

Steven T. Holtan 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 liners and methods for making cylinder liners
    Patent number: 7665440
    Abstract: A method for making cylinder liners and cast engine blocks having cylinder liners having a strong mechanical bond with the engine block. The method includes providing a cast metallic cylinder liner having an outer surface of the cylinder liner. The surface of the cylinder liner is preferably machined to remove surface effects or defects present from the casting process. Grit particles are directed at the outer surface of the cylinder liner with a grit blasting device at a predetermined angle of contact at a sufficient velocity to form cavities on the outer surface. The cavities that are formed have a geometry capable of forming a mechanical bond with the casting material of the engine block.
    Type: Grant
    Filed: June 5, 2006
    Date of Patent: February 23, 2010
    Assignee: Slinger Manufacturing Company, Inc.
    Inventors: Steven T. Holtan, Shengli Liu
  • CYLINDER LINERS AND METHODS FOR MAKING CYLINDER LINERS
    Publication number: 20070277771
    Abstract: A method for making cylinder liners and cast engine blocks having cylinder liners having a strong mechanical bond with the engine block. The method includes providing a cast metallic cylinder liner having an outer surface of the cylinder liner. The surface of the cylinder liner is preferably machined to remove surface effects or defects present from the casting process. Grit particles are directed at the outer surface of the cylinder liner with a grit blasting device at a predetermined angle of contact at a sufficient velocity to form cavities on the outer surface. The cavities that are formed have a geometry capable of forming a mechanical bond with the casting material of the engine block.
    Type: Application
    Filed: June 5, 2006
    Publication date: December 6, 2007
    Applicant: SLINGER MANUFACTURING COMPANY, INC.
    Inventors: Steven T. Holtan, Shengli Liu