上浒充大学 Involute profiles SHANGHAI IAD TONG UNEVESmE Advantages using involute profiles 2000-D0UG WRIGHf,UWA Line of action is a fixed line(common normal). 上泽克夏大粤 Involute profiles Advantages using involute profiles ②2000 DOUG WRIGHf,UW4 Obey to the fundamental law of gearing14 Involute profiles Advantages using involute profiles Line of action is a fixed line(common normal). Involute profiles Advantages using involute profiles Obey to the fundamental law of gearing