Patents by Inventor Klaus Stefaniak

Klaus Stefaniak 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).

  • Shut-off fittings with a sealing device
    Patent number: 5238252
    Abstract: A shut-off fitting with a sealing device consisting of a packing casing and a packing gland for the actuation element of the valve has the packing casing including bores that hold the sealing elements. The packing has at least one grooved metal ring with an elastic ring seal on the side facing the actuation element and the bore. As a seat for an elastic ring seal the packing gland features an oblique shoulder which descends toward the center, whereby the ring seal bears the pressure conveyed by a ring element and produced by a spring in the longitudinal direction of the axis of the actuation element.
    Type: Grant
    Filed: November 27, 1992
    Date of Patent: August 24, 1993
    Assignee: Eisenwerk Heinrich Schilling GmbH & Co.
    Inventors: Wilhelm Stewen, Norbert Holken, Klaus Stefaniak