Cannister and upright vortex vacuum cleaners

Details Cannister and upright vortex vacuum cleaners Cannister and upright vortex vacuum cleaners

2005-10-25

2005-10-25

Snider, Theresa T. (Department: 1744)

Brushing, scrubbing, and general cleaning

Machines

With air blast or suction

C015S346000, C015S353000, C055SDIG003, C055S337000, C055S429000

Reexamination Certificate

active

06957472

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.

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