Patents by Inventor Holger Sandner

Holger Sandner 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: 6553609
    Abstract: The invention relates to an apparatus for floor cleaning, with several wheels 4, 5, 6 being attached to a frame R in such a way that a curve movement about a momentary center MP, MP1, MP2 can be performed and all momentary centers MP, MP1, MP2 form a momentary center axis MA extending substantially transversally to the frame R, and with a cleaning device 24a, 24b being received in the frame R, which cleaning device forms a cleaning surface area RF which is delimited by a circumferential edge. In order to reduce uncleaned residual surfaces when moving along contours it is provided in accordance with the invention that the momentary center axis MA forms at least one point of intersection S1, S2 in a section of the circumferential edge disposed in the zone of the longitudinal side of the frame R.
    Type: Grant
    Filed: April 17, 2001
    Date of Patent: April 29, 2003
    Inventors: Dieter Tremmel, Peter Belkhofer, Andreas Kistner, Michael Kotz, Christian Neumann, Markus Merkl, Holger Sandner
  • Publication number: 20010032372
    Abstract: The invention relates to an apparatus for floor cleaning, with several wheels 4, 5, 6 being attached to a frame R in such a way that a curve movement about a momentary center MP, MP1, MP2 can be performed and all momentary centers MP, MP1, MP2 form a momentary center axis MA extending substantially transversally to the frame R, and with a cleaning device 24a, 24b being received in the frame R, which cleaning device forms a cleaning surface area RF which is delimited by a circumferential edge. In order to reduce uncleaned residual surfaces when moving along contours it is provided in accordance with the invention that the momentary center axis MA forms at least one point of intersection S1, S2 in a section of the circumferential edge disposed in the zone of the longitudinal side of the frame R.
    Type: Application
    Filed: April 17, 2001
    Publication date: October 25, 2001
    Inventors: Dieter Tremmel, Peter Belkhofer, Andreas Kistner, Michael Kotz, Christian Neumann, Markus Merkl, Holger Sandner