Cleaning appliance

Details Cleaning appliance Cleaning appliance

2009-11-10

2011-11-08

Muller, Bryan R (Department: 3727)

Brushing, scrubbing, and general cleaning

Machines

With air blast or suction

C015S327100

Reexamination Certificate

active

08051531

ABSTRACT:
A cleaning appliance such as a vacuum cleaner includes a main body housing a motor and fan unit for generating a fluid flow. The main body also houses a removable pre-motor filter located upstream of the motor and fan and a removable post-motor filter located downstream of the motor and fan. It is beneficial to permit the user to be able to monitor the condition of both the pre-motor filter and the post-motor filter, and to remove and replace them as required, and so access to both filters may be provided. It is more important that the user checks the pre-motor filter as it gets dirtier than the post-motor filter. Therefore, the post-motor filter is not accessible or removable from the main body until the pre-motor filter is removed from the main body, by removing its housing.

REFERENCES:
patent: 6289553 (2001-09-01), Dyson
patent: 2005/0125939 (2005-06-01), Hansen et al.
patent: 1 177 757 (2002-02-01), None
patent: 62-123756 (1987-08-01), None
patent: 2004-510452 (2004-04-01), None
patent: 2005-516711 (2005-06-01), None
patent: WO-99/30602 (1999-06-01), None
patent: WO-03/068041 (2003-08-01), None
patent: WO-2008/015377 (2008-02-01), None
GB Search Report dated Mar. 4, 2009 directed at counterpart application No. 0821763.0; 1 page.

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