Patents by Inventor Thomas Boerkircher

Thomas Boerkircher 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: 11058274
    Abstract: A surface cleaning machine is proposed which includes an appliance body and a cleaning head which is arranged on the appliance body, wherein at least one driven cleaning roller unit is positioned on the cleaning head and a dirty fluid tank device is arranged on the cleaning head, and a drive motor, wherein a scraper guide device which acts on the at least one cleaning roller unit is associated with the at least one cleaning roller unit, wherein the scraper guide device is arranged at an inlet orifice of the dirty fluid tank device, and wherein the scraper guide device is arranged and formed in such a way that dirty fluid is couplable from the at least one cleaning roller unit via the inlet orifice of the dirty fluid tank device into the dirty fluid tank device without a suction fan.
    Type: Grant
    Filed: September 7, 2018
    Date of Patent: July 13, 2021
    Assignee: Alfred Kärcher SE & Co. KG
    Inventors: Andreas Mueller, Thomas Boerkircher, Rainer Kurmann, Thomas Zerrer