Patents by Inventor Maria Berndtson

Maria Berndtson 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: 8418311
    Abstract: A vacuum cleaner having a vacuum cleaner body, a suction fan and motor operatively associated with the vacuum cleaner body, and a wheel. The wheel has a wheel body having an axis of rotation, a tread surface, and a cushion layer radially interposed between the wheel body and the tread surface. The cushion layer includes a resilient shell having a plurality of resilient cells therein. The shell and the plurality of cells have one or more gasses in them, and are dimensioned to damp vibrations and impacts between the tread surface and a floor surface that the tread surface contacts as the wheel rotates about the axis of rotation.
    Type: Grant
    Filed: December 3, 2007
    Date of Patent: April 16, 2013
    Assignee: AB Electrolux
    Inventors: Anna-Karin Trydegård, Esbjörn Svantesson, Stefan Jonsson, Maria Berndtson
  • Publication number: 20100170058
    Abstract: A vacuum cleaner having a vacuum cleaner body, a suction fan and motor operatively associated with the vacuum cleaner body, and a wheel. The wheel has a wheel body having an axis of rotation, a tread surface, and a cushion layer radially interposed between the wheel body and the tread surface. The cushion layer includes a resilient shell having a plurality of resilient cells therein. The shell and the plurality of cells have one or more gasses in them, and are dimensioned to damp vibrations and impacts between the tread surface and a floor surface that the tread surface contacts as the wheel rotates about the axis of rotation.
    Type: Application
    Filed: December 3, 2007
    Publication date: July 8, 2010
    Inventors: Anna-Karin Trydegård, Esbjörn Svantesson, Stefan Jonsson, Maria Berndtson