Patent ID: 6997090
Filing Date: 2006-02-14
Classification: B23D,B27B,B27G,F16P,Y10S,Y10T

Abstract:
1. A saw comprising: a blade configured to move to cut a work piece, where the blade includes a cutting edge; a motor adapted to move the blade; a detection system adapted to detect contact between a person and the blade while the blade is moving and to distinguish that contact from contact between green wood and the blade by imparting a signal to the blade and monitoring that signal for a predetermined rate of change indicative of contact with a person; and a replaceable brake cartridge adapted to stop the blade when the detection system detects contact between a person and the blade, the brake cartridge including: where the brake cartridge is positioned in the saw so that the blade-contact surface can pivot into contact with the cutting edge of the blade to stop the blade.