Patents by Inventor Hans Leinweber

Hans Leinweber 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).

  • Shutoff valve with a conical valve seat
    Patent number: 4607822
    Abstract: A shutoff valve, includes a conical valve seat, and a valve disc movable toward the valve seat in a given direction, the valve disc including a base body covering the valve seat, an annular projection projecting from the base body in the given direction, and a rim formed on the outside of the projection resting against the valve seat in a closed position of the valve, the projection having a region with a given wall thickness in vicinity of the base body and the projection having a free end reinforced to at least 1.5 times the given thickness in the radial direction.
    Type: Grant
    Filed: May 7, 1984
    Date of Patent: August 26, 1986
    Assignee: Kraftwerk Union Aktiengesellschaft
    Inventors: Hans-Peter Schabert, Max Heller, Erwin Laurer, Hans Leinweber