Patent ID: 7699042
Filing Date: 2010-04-20
Classification: B01D

Abstract:
1. A filtration device for filtering air for use with a fuel vapor recovery system, said filtration device comprising: a housing defining a chamber having a rotational axis an upper end and a lower end; a cap configured to be positioned on and close the upper end of the housing, said cap defining at least one generally helical passageway helically extending generally toward the lower end of the chamber and comprising at least one air inlet, such that air entering the chamber through the air inlet is directed by said helical passageway to rotate in the chamber about the rotational axis wherein a centrifugal force of the rotating air filters out contaminants contained therein and a downward force of the air urges the contaminants towards the lower end; and an air outlet positioned within the chamber for removing filtered air from the filtration device.