Patents by Inventor Hartwig Sibbers

Hartwig Sibbers 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: 7584902
    Abstract: A device carried on a moving vehicle for creating marking lines, which are a plurality of elements and are made of a highly viscous marking material, on a surface that is to be marked. The device includes a housing formed by walls and a discharge slot formed in at least one of the walls of the housing and extending transversely to a direction of movement of the vehicle, the discharge slot being limited in extent by a front discharge slot edge and a rear discharge slot edge, seen in the direction of movement of the vehicle. A pressurized material supply line leads to an interior of the housing. A rotatable hollow cylinder formed of a jacket is located in the interior of the housing and is arranged to rotate with the movement of the vehicle carrying the device. The cylinder is provided with a plurality of passages through the jacket, which, depending on a rotary position of the cylinder, establish a connection between the pressurized material supply line and the discharge slot.
    Type: Grant
    Filed: December 22, 2004
    Date of Patent: September 8, 2009
    Assignee: Hofmann GmbH Maschinenfabrik und Vertrieb
    Inventors: Hartwig Sibbers, Klaus-Dieter Reidath
  • Publication number: 20080236485
    Abstract: A device carried on a moving vehicle for creating marking lines, which are a plurality of elements and are made of a highly viscous marking material, on a surface that is to be marked. The device includes a housing formed by walls and a discharge slot formed in at least one of the walls of the housing and extending transversely to a direction of movement of the vehicle, the discharge slot being limited in extent by a front discharge slot edge and a rear discharge slot edge, seen in the direction of movement of the vehicle. A pressurized material supply line leads to an interior of the housing. A rotatable hollow cylinder formed of a jacket is located in the interior of the housing and is arranged to rotate with the movement of the vehicle carrying the device. The cylinder is provided with a plurality of passages through the jacket, which, depending on a rotary position of the cylinder, establish a connection between the pressurized material supply line and the discharge slot.
    Type: Application
    Filed: December 22, 2004
    Publication date: October 2, 2008
    Inventors: Hartwig Sibbers, Klaus-Dieter Reidath
  • Patent number: 4598721
    Abstract: For the production of crimped fibre pieces from reconstituted tobacco a mixture of tobacco dust and/or tobacco waste, binders and possibly additives is extruded by a special die or nozzle head to filiform intermediate products with preferably rectangular to slightly lenticular cross-section which immediately after leaving the die head can be cut to give crimped fibre pieces. For forming this crimping no further operation is necessary.
    Type: Grant
    Filed: October 29, 1984
    Date of Patent: July 8, 1986
    Assignee: B.A.T. Cigaretten-Fabriken GmbH
    Inventors: Wilfried Stiller, Jorn Ulrich, Hartwig Sibbers