Patents by Inventor George J. Haupt

George J. Haupt 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: 5298957
    Abstract: An fuser apparatus for minimizing heat transfer between an end of a fuser roll and a fuser bearing includes a generally cylindrical fuser collar positioned between one end of the fuser roll and one of the fuser bearings and having an outer surface contacting the fuser bearing and an inner surface contacting the fuser roll. A plurality of protrusions are formed on either the inner surface or outer surface of the collar to reduce the heat transfer between the fuser roll and fuser bearing. Grooves supporting O-rings may also be formed in the collar or in an end of the fuser roll for allowing the fuser roll to move axially relative to the collar.
    Type: Grant
    Filed: November 25, 1992
    Date of Patent: March 29, 1994
    Assignee: Xerox Corporation
    Inventors: George J. Haupt, Robert Pugh, Jr.
  • Patent number: 5170211
    Abstract: A copying apparatus which includes a filtering system defining an inlet and an outlet to the corotron cavity. Both the inlet and the outlet include filter material for filtering the air before it is delivered to the corotron cavity and filtering effluents generated during actuation of scorotron wires. The pathways to the inlet and the scorotron cavity are sealed to ensure little or no leakage of contaminated air which could be exposed to the scorotron wires. For this purpose two activated charcoal filters are doped with silver on a foam substrate, utilized both for the inlet and the outlet filters.
    Type: Grant
    Filed: December 14, 1990
    Date of Patent: December 8, 1992
    Assignee: Xerox Corporation
    Inventors: George J. Haupt, Bruce E. Thorp
  • Patent number: 4303334
    Abstract: A heat regulator for a fuser in a reproduction machine. The heat regulator includes a fuser cooling fan, and a controller having a cooling fan counter. The cooling fan counter manifests the number of copies reproduced up to a predetermined maximum in response to a document scan switch. The contents of the cooling fan counter is the basis for determining the length of time of operation of the cooling fan at the end of a reproduction run. Specifically, the machine cooling fan maintains operation during machine cycle out at the end of a reproduction run for a three second period for each count in the cooling fan counter up to a predetermined maximum.
    Type: Grant
    Filed: October 1, 1979
    Date of Patent: December 1, 1981
    Assignee: Xerox Corporation
    Inventors: George J. Haupt, Gerald E. Carlson, Eugene S. Evanitsky