Patents by Inventor Johann Rosenitsch

Johann Rosenitsch 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).

  • Stopcock formed of sheet metal
    Patent number: 4180244
    Abstract: A stopcock with the exception of its shaft, journal and bearings, is constructed of a plurality of sheet metal parts welded together to form a housing and a plug rotatably mounted in the housing. The housing is made up of a tubular member with ring disks welded to its opposite ends. The plug is made up of ball-shaped half shells and annular disk cores welded to the half shells. A tubular plate is welded into the half shell and forms the flow passage through the stopcock.
    Type: Grant
    Filed: May 23, 1977
    Date of Patent: December 25, 1979
    Assignee: Hubner-Vamag Aktiengesellschaft & Co. Kommanditgesellschaft
    Inventor: Johann Rosenitsch