Hand-held cordless vacuum cleaner

Details Hand-held cordless vacuum cleaner Hand-held cordless vacuum cleaner

2009-02-13

2010-12-07

Muller, Bryan R (Department: 3727)

Brushing, scrubbing, and general cleaning

Machines

With air blast or suction

Reexamination Certificate

active

07845046

ABSTRACT:
A hand-held vacuum cleaner with a container for the storage of dirt and debris therein. To provide improved efficiency and performance, the hand-held vacuum may employ a primary HEPA filter, a device for swirling a dirt and debris laden air flow and/or a mechanized filter cleaning device. Swirling may be employed to direct entrained dirt and debris in a desired direction relative to the container to slow the rate with which dirt and debris accumulates on the primary filter and/or to centrifugally remove dirt and debris from the air flow. Mechanized cleaning is employed to shake, scrape or otherwise remove accumulated dirt and debris from the primary filter.

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National brochure (2 pages).
Digital photographs of National corded vacuum (4 pages).
Panasonic bagless cylinder vacuum cleaner advertisement (1 page).

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