Patents Represented by Attorney Ward & Olivia

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  • Cannister and upright vortex vacuum cleaners
    Patent number: 6957472
    Abstract: The present invention relates to upright and cannister vacuum cleaners. The improved vacuum cleaners utilize toroidal vortex technology to provide efficient airflow in a sealed system. The sealed system prevents dust from escaping into the atmosphere and retains kinetic energy of flowing air. The present invention is also quieter, lighter, and simpler than conventional designs.
    Type: Grant
    Filed: January 16, 2002
    Date of Patent: October 25, 2005
    Assignee: Vortex HC, LLC
    Inventors: Lewis Illingworth, David Reinfeld