Filter assembly for vacuum cleaner and vacuum cleaner incorporating such assembly
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United States of America Patent
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Aug 11, 2009
Grant Date -
Aug 25, 2005
app pub date -
Jan 31, 2005
filing date -
Feb 10, 2004
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
A filter apparatus and a vacuum cleaner incorporating the filter apparatus are disclosed. The filter apparatus has a first, fine filter assembly and a second, coarse filter assembly. The fine filter assembly includes a body defining a central aperture in which a pleated fine filter element is arranged. The periphery of aperture is surrounded by a resilient rubber sealing member. Apertures are arranged around the body portion radially outwards of the aperture and sealing member for mounting the fine filter assembly to pins on housing of the vacuum cleaner. The body is also provided with radially inwardly facing slots for engaging corresponding projections on a coarse filter assembly for removably mounting the coarse filter assembly to the fine filter assembly. The removable coarse filter assembly gives the user a choice between two stage filtration (i.e. using the fine and course filter assemblies) or single stage filtration (i.e. using the fine filter assembly only).
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