Patents by Inventor Charles M. Burkard

Charles M. Burkard 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: 4053224
    Abstract: A document handling system for making multiple precollated copy sheet sets from a set of individual document sheets. The documents are recirculated between a pair of web scrolls and repeatedly imaged on an exposed intermediate web segment extending between the two scrolls. One web scroll is inside wound and above the plane of the intermediate segment, and a second scroll is outside wound and below the plane of the intermediate segment so as to provide unobstructed document loading and unloading access. The documents are retained before and on the second scroll by means of a second web unwound from a third scroll and commonly wound on the second scroll. The third scroll is movable from adjacent the document imaging area to another position in which the two webs separate on the second scroll. The second web does not pass through the document imaging area.
    Type: Grant
    Filed: July 1, 1976
    Date of Patent: October 11, 1977
    Assignee: Xerox Corporation
    Inventors: Charles M. Burkard, Edward C. Bock