A miter saw having a base and an arm that pivots toward the base is disclosed. A blade is supported by the arm, and is designed to cut workpieces resting on the base when the arm and blade pivot downward. The saw includes a detection system configured to detect one or more dangerous conditions between...http://www.google.fr/patents/US6813983?utm_source=gb-gplus-shareBrevet US6813983 - Power saw with improved safety system