Patents by Inventor Kaspar Davatz

Kaspar Davatz 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 valve with spherical plug
    Patent number: 4667928
    Abstract: A shut-off valve assembly includes a housing which has a spherical plug arranged in a chamber. The housing has an internal thread into which a support element for a sealing member is screwed. On the outer end face of the support element is supported a flange bushing by means of a retaining nut. The pitches of the internal thread and of an external thread for the retaining nut are directed in opposite directions, so that the support element cannot be loosened when the retaining nut is unscrewed.
    Type: Grant
    Filed: May 13, 1986
    Date of Patent: May 26, 1987
    Assignee: Georg Fischer Aktiengesellschaft
    Inventors: Kaspar Davatz, Bruno Hilpert, Bruno Hunziker