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US 8,918,953 B2Granted
Filter unit for vacuum cleaner
AssigneeAktiebolaget Elctrolux
InventorsFredrik Sjöberg, Ulrik Danestad
Life of this patent
Estimating the term…
Abstract
A filter unit (100) for a vacuum cleaner includes a filter body (110) and a dust removing means (120). The filter body is elongated and at least partly flexible and the dust removing means is configured to collapse and expand the filter body in response to a force applied on the dust removing means. The filter body comprises pleats (115) extending along the filter body. The filter unit of the present invention is advantageous in that it reduces clogging and thereby increases the efficiency of the vacuum cleaner.
Claims20
A filter unit for a vacuum cleaner, said filter unit comprising:
- a filter body being elongated and at least partly flexible, and
- a dust removing mechanism configured to collapse and expand the filter body in response to a force applied on the dust removing mechanism,
- the filter body comprises pleats extending along the filter body, and wherein the dust removing mechanism is configured to twist the filter body at an angle in the range of about 10-360 degrees.
Dependencies are inferred from the claim text.