Patents by Inventor Roland Tesar

Roland Tesar 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).

  • Control valve
    Patent number: 4707278
    Abstract: A control valve includes a valve box whose interior accommodates a valve needle closing against a valve seat. The interior of the valve box is subdivided in sections with at least two conical bores with different cone angles for improving the flow guidance and providing more uniform velocity distribution.
    Type: Grant
    Filed: December 2, 1985
    Date of Patent: November 17, 1987
    Assignee: Herion-Werke KG
    Inventors: Karl Breyer, Roland Tesar