Patents by Inventor Walter Zulauf

Walter Zulauf 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).

  • Patent number: 6220174
    Abstract: A guidance system with a truck guided on a rail (1) has available laterally arranged guiding surfaces (2.1, 2.2) for guide rollers of the truck. A rack (4) is preferably constructed on the rail (1) such that a dividing line (6) of a gearing (5) of the rack (4) constantly runs through a median perpendicular (7) of the cross-section of the rail (1). Each truck has, for example, two wheel frames. The wheel frames are preferably so constructed that the swivel axis (22) runs through a power application point (14) of the dividing line (6). The guiding elements form a three-point guidance system.
    Type: Grant
    Filed: April 15, 1999
    Date of Patent: April 24, 2001
    Assignee: Gudel AG
    Inventors: Rudolf Gudel, Walter Zulauf, Hans-Ulrich Kurt