Patents by Inventor Thomas W. Fletcher

Thomas W. Fletcher 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).

  • Printing apparatus employing a compliant sheet corrugating device
    Patent number: 5153663
    Abstract: A simple, low cost corrugation device for removing curl from sheets includes a compliant corrugator roll that is effective with light weight, low beam strength papers needing corrugation and passive with heavy weight, high beam stiffness papers not needing/not wanting corrugation. One type of corrugation roll is a cylindrical elastomeric roll made of a foam or sponge-like material. An alternative corrugator roll configuration is a hollow frustrum of a cone.
    Type: Grant
    Filed: May 31, 1991
    Date of Patent: October 6, 1992
    Assignee: Xerox Corporation
    Inventors: Henry T. Bober, Frank C. Darling, Jr., Thomas W. Fletcher