Patents by Inventor Douglas M. Kedl

Douglas M. Kedl 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).

  • Infinitely variable diameter roller
    Patent number: 5522785
    Abstract: A roller assembly for guiding webs and removing wrinkles includes an outer cylindrical surface that is supported on a shaft about which it can rotate. Portions of the outer diameter of the outer cylindrical surface can expand and contract radially using a radial expander that can move axially along the shaft. The radial expander has an increasing radius from a point closer to a central transverse axis of the roller assembly to a point further from the central transverse axis of the roller assembly so that the closer the radial expander is to the central transverse axis, the greater the radial expansion of the outer cylindrical surface.
    Type: Grant
    Filed: September 29, 1994
    Date of Patent: June 4, 1996
    Assignee: Minnesota Mining and Manufacturing Company
    Inventors: Douglas M. Kedl, John S. Huizinga