Patent ID: 7637972

Claim:
A low resistance air filter device comprising: a tubular case ( 2 ) for receiving a tubular shaped filtering element ( 3 ) having a lower end and an upper end, the filtering element located in the tubular case so as to receive an air flow from a lower air inlet opening ( 5 ) provided in a lower opening ( 9 ) of the case ( 2 ), the tubular case having an upper opening ( 10 ), and outlet means ( 8 ) disposed over the upper opening ( 10 ) and having an outflow opening ( 7 ) for discharging filtered air, the outlet means having a trumpet shaped tubular body ( 11 ) projecting inwardly from the outlet means into an interior volume of the tubular case, and defining a recess forming a trap ( 21 ) between the trumpet shaped tubular body and an inside wall of the tubular case, the trap ( 21 ) capturing objects downstream of the filtering element to prevent transport of the objects with the filtered air, the trumpet shaped tubular body connecting the interior volume of the tubular case with the outflow opening ( 7 ), for leading filtered air thereto, deflecting means ( 6 ) disposed within the filtering element, the deflecting means forcedly deflecting the air flow received from the lower inlet opening ( 5 ) towards a filter contained within the filter element, for filtering the air passing therethrough as the air flows to the interior volume of the tubular case and then towards the outflow opening.