Patents by Inventor Hans J. Wulz

Hans J. Wulz 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).

  • Mixed dryer section including single-tier and double-tier drying groups with automatic ropeless threading
    Patent number: 5600897
    Abstract: In the initial region of the dryer section at least one of the dryer groups (23) is developed as a single-felt dryer group in which a single endless felt (F) and the web (9) travel alternately over cylinders (73) and guide suction rolls (73'). In the final region of the dryer section there is present at least one double-felt dryer group (24) in which a web (9) travels alternately over lower (74) and upper (74') cylinders. The single-felt group (23) has an automatic ropeless tail guide device (76, 79) for the threading of the so-called tail. In the double-felt dryer group (24) an automatic ropeless tail guide device (77, 78) is also present.
    Type: Grant
    Filed: November 12, 1993
    Date of Patent: February 11, 1997
    Assignee: J.M. Voith GmbH
    Inventors: Hans-Peter Sollinger, Gerhard Kotitschke, Hans J. Wulz, Peter Kahl, Wolfgang Mueller