A range-limiting device allows a user to establish a range of motion, while maintaining the proper mechanical advantage provided by the cam assembly. The range-limiting device includes a shaft containing a lever and a cam disposed thereon. The radial orientation of the lever with respect to the cam is...http://www.google.fr/patents/US20030092540?utm_source=gb-gplus-shareBrevet US20030092540 - Range limiting device for exercise machine
