Vacuum cleaner including dust bag and filter

Details Vacuum cleaner including dust bag and filter Vacuum cleaner including dust bag and filter

1975-03-31

1976-07-27

Nozick, Bernard

Gas separation

Flexible or collapsible bag type

With additional nonbag type filter

15351, 55380, 55473, 55481, 55511, 55527, B01D 4602

Patent

active

039716430

ABSTRACT:
The improved dust bag is designed for use with an upright vacuum cleaner and is made of air impervious material. The lower end of the dust bag is connected with the base of the upright vacuum cleaner adjacent to the air discharge outlet of the vacuum cleaner. A first, relatively large opening is formed in the dust bag and defines the flow path through which air may flow out of the dust bag. An inner wall divides the interior of the dust bag into first and second compartments and includes a second opening which is aligned with and coincides, in size and shape, with the first opening and which permits air to flow from the second compartment to the first compartment. A filter is disposed in the first compartment adjacent to the first opening and is utilized to filter the air as it flows out of the dust bag through the first opening. The pressure of the air within the second compartment of the dust bag biases the portion of the inner wall surrounding the second opening against the filter so as to form a seal therebetween. A second, inner dirt collection bag is disposed within the second compartment, is connected to the discharge opening of the upright vacuum cleaner, and is made of air pervious material.
The dust bag has normally closed apertures therein which permit selective replacement of the second bag and the filter. These apertures are closed by zipper type fasteners which prevent air from flowing out of the dust bag when the apertures are closed.

REFERENCES:
patent: 1422105 (1922-07-01), Kirby
patent: 1828584 (1931-10-01), Andersen
patent: 1999826 (1935-04-01), Snell
patent: 3408438 (1968-10-01), Staunton
patent: 3535855 (1970-10-01), Howard et al.

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