Patents by Inventor Hans Simmon

Hans Simmon 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).

  • Adjusting device for the rolls of a calendar
    Patent number: 5911783
    Abstract: An adjusting device for the rolls of a calender having a hydraulic drive for the fine setting of the rolls in their working position and a hydraulic drive for positioning the rolls in the working, maintenance and roll-change positions. The hydraulic drive for positioning the rolls includes hydraulic cylinders having double-acting pistons. An interlock device is provided, by which the piston rod can be interlocked positively in the working position of the rolls, after which the piston rod can be acted on by a prestressing force opposed to the adjusting direction in such a way that the interlock has no play.
    Type: Grant
    Filed: June 16, 1997
    Date of Patent: June 15, 1999
    Assignee: Hermann Berstorff Maschinenbau GmbH
    Inventors: Stefan Wiener, Hans Simmon