A pedal operation amount detecting apparatus detects a pedal operation amount based on a load applied by a rotating operation of an operating pedal between the operating pedal and a connecting shaft which rotatably connects the operating pedal and a connecting member connected at an end portion of an...http://www.google.es/patents/US8001836?utm_source=gb-gplus-sharePatente US8001836 - Pedal operation amount detecting apparatus
