Patents by Inventor Ursula Schafer

Ursula Schafer 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: 7333756
    Abstract: In a method and system for transport of toner material, a reservoir arrangement containing the toner material is provided with a removal opening for removal of the toner material. The toner material is transported away from the removal opening with aid of a tube-shaped conduit, the toner material being transported in the tube-shaped conduit via an air current. A negative pressure is generated relative to environment pressure at the removal opening via the air current in the tube-shaped conduit. The reservoir arrangement is provided with at least one air-permeable and toner-tight region through which air is sucked into the reservoir arrangement upon application of the negative pressure. At least the air-permeable and toner-tight region is partitioned airtight from the environment, environment air being supplied to the partitioned region via a dosing nozzle.
    Type: Grant
    Filed: May 23, 2003
    Date of Patent: February 19, 2008
    Assignee: Oce Printing Systems GmbH
    Inventors: Bernd Schoch, Ursula Schäfer, Karl Zappe
  • Publication number: 20060024101
    Abstract: In a method and system for transport of toner material, a reservoir arrangement containing the toner material is provided with a removal opening for removal of the toner material. The toner material is transported away from the removal opening with aid of a tube-shaped conduit, the toner material being transported in the conduit via an air current. A negative pressure is generated relative to environment pressure at the removal opening via the air current in the conduit. The reservoir arrangement is provided with at least one air-permeable and toner-tight region through which air is sucked into the reservoir arrangement upon application of the negative pressure. At least the air-permeable and toner-tight region is partitioned airtight from the environment, environment air being supplied to the partitioned region via a dosing nozzle.
    Type: Application
    Filed: May 23, 2003
    Publication date: February 2, 2006
    Inventors: Bernd Schoch, Ursula Schafer, Karl Zappe
  • Patent number: 6889026
    Abstract: A method of conveying toner material from a refill container is provided, wherein a refill container having an opening for the discharge of toner material is arranged in a receptacle device in a first substantially upright position. In this first position, the opening is closed by a closing device. The refill container is swiveled into the second position with bottom opening with the aid of the receptacle device. Toner material is taken from the refill container via a discharge opening provided in the closing device. Further, the invention relates to a device for conveying toner material and to an associated toner refill container.
    Type: Grant
    Filed: May 23, 2003
    Date of Patent: May 3, 2005
    Assignee: Océ Printing Systems GmbH
    Inventors: Bernhard Schlageter, Reinhold Schmidl, René Froeschl, Christian Heil, Josef Ranner, Ursula Schafer
  • Publication number: 20040037591
    Abstract: A method of conveying toner material from a refill container is provided, wherein a refill container having an opening for the discharge of toner material is arranged in a receptacle device in a first substantially upright position. In this first position, the opening is closed by a closing device. The refill container is swiveled into the second position with bottom opening with the aid of the receptacle device. Toner material is taken from the refill container via a discharge opening provided in the closing device. Further, the invention relates to a device for conveying toner material and to an associated toner refill container.
    Type: Application
    Filed: May 23, 2003
    Publication date: February 26, 2004
    Inventors: Bernhard Schlageter, Reinhold Schmidl, Rene Froeschl, Christian Heil, Josef Ranner, Ursula Schafer