Patents by Inventor Ralph Yorio

Ralph Yorio 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).

  • Method of making torsional vibration damper having a roll spun housing
    Patent number: 4953778
    Abstract: A viscous torsional vibration damper of the kind operating on the shear film principle has a roll spun annular channel shaped housing providing an annular working chamber within which is mounted an annular complementary inertia mass ring and a viscous damping fluid substantially fills shear film spaces between the working surfaces of the inertia ring and confronting working surfaces of the housing within the chamber. Working surface area of the housing within the working chamber has a spinning roll burnished finish. A roll formed rabbet provides a shoulder seat on one wall of the housing with an edge portion of a closure sealed thereto. Laser welding permanently secures the closure to the housing.
    Type: Grant
    Filed: June 8, 1989
    Date of Patent: September 4, 1990
    Assignee: Vibratech, Inc.
    Inventors: Thomas J. Critton, Donald S. Johnson, Walter P. Pukalo, Ralph Yorio
  • Torsional vibration damper having a roll spun housing and other improvements
    Patent number: 4872369
    Abstract: A viscous torsional vibration damper of the kind operating on the shear film principle has a roll spun annular channel shaped housing providing an annular working chamber within which is mounted an annular complementary inertia mass ring and a viscous damping fluid substantially fills shear film spaces between the working surfaces of the inertia ring and confronting working surfaces of the housing within the chamber. Working surface area of the housing within the working chamber has a spinning roll burnished finish. A roll formed rabbet provides a shoulder seat on one wall of the housing with an edge portion of a closure sealed thereto. Laser welding permanently secures the closure to the housing.
    Type: Grant
    Filed: August 3, 1987
    Date of Patent: October 10, 1989
    Assignee: Vibratech, Inc.
    Inventors: Thomas J. Critton, Donald S. Johnson, Walter P. Pukalo, Ralph Yorio