Patent ID: 8667639
Filing Date: 2014-03-11
Classification: A47L

Abstract:
1. A vacuum cleaner comprising: a main separation stage comprising a chamber housing a separator for separating out dirt from airflow supplied to a separator inlet and passing along a first airflow path through the separator, the chamber having a first aperture as well as a second aperture separate and distinct from the first aperture; the first aperture in fluid communication with a suction source for supplying suction to the chamber of the main separation stage; the second aperture formed in a wall of the chamber and defining a second airflow path in fluid communication with ambient for intake of ambient air into the chamber, wherein the second airflow path bypasses the separator for supply of ambient air to the suction source; and a filter assembly, separate and distinct from the separator and removably disposed within the chamber in an installed configuration wherein the filter assembly is arranged to occlude said second aperture and thus block the second airflow path as well as provide a filtration stage between the main separation stage and the inlet of the suction source.