Patents by Inventor Donald F. Willmann

Donald F. Willmann 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).

  • Cable retractor
    Patent number: 5746389
    Abstract: A cable retractor comprising interconnected restrainer segments attached end-to-end by pivot pins, such that the entire structure is foldable into a small space. A fiber optic cable is attached to restrainer segments in a manner such that the total path length of the fiber optic cable does not substantially change as the retractor is unfolded to an extended position from a folded position.
    Type: Grant
    Filed: December 20, 1996
    Date of Patent: May 5, 1998
    Assignee: E-Systems, Inc.
    Inventor: Donald F. Willmann