Patent ID: 7837753

Claim:
A system for filtering particles from an airflow, comprising: a housing defining a chamber, the housing including an airflow and particle inlet, a first outlet, and a second outlet, the airflow and particle inlet adapted to direct at least a portion of the airflow and the particles into the chamber, the first outlet formed in the housing across the chamber from the airflow and particle inlet, the second outlet formed in the housing and located axially between the airflow and particle inlet and the first outlet; a tube disposed within the chamber and extending past the second outlet of the housing and including an inlet end hole and an outlet end hole, the inlet end hole aligned with the airflow and particle inlet of the housing; and a concentrator disposed between the outlet end hole of the tube and the first outlet of the housing and adapted to concentrate the particles from the airflow and particle inlet into a space within the chamber; wherein: the first outlet is adapted to allow the concentrated particles to exit the system; and the second outlet is located outside of the tube and is adapted to allow substantially all of the airflow to exit therethrough.