Patents by Inventor Frans M. Umans

Frans M. Umans 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).

  • Contact heat fusing apparatus
    Patent number: 4269594
    Abstract: A unit for heat fixing xerographic images makes use of a fuser roller and a self adjusting pressure roller. The fuser roller is internally heated and it may be associated with a self adjusting cleaning roller. The preceeding elements may be combined into a unit which can be provided moreover with scraper elements and supplementary feeding rollers located downstream of the fuser and fusing rollers and which rotate at a peripheral speed exceeding that of the latter rollers.
    Type: Grant
    Filed: December 5, 1978
    Date of Patent: May 26, 1981
    Assignee: AGFA-GEVAERT N.V.
    Inventors: Frans M. Umans, Willy G. Ceuppens, Willy J. Palmans, Robert T. Overmeer