Patent ID: 8191482

Claim:
A method to minimize impulse loads of arrest in a trolley, the method comprising: providing a trolley traveling along a cable suspended from supports proximate first and second ends of the cable; initiating, proximate the first end of the cable, relative motion of the trolley with respect to the cable in response to a gravitational force; applying a braking force to the cable, by a braking device on the trolley, between the trolley and the cable to control the speed of the trolley along the cable; approaching, by the trolley, the second end of the cable; relieving, by using an engagement mechanism attached proximate the second end of the cable, the braking force applied to the cable during a continuation of the motion of the trolley with respect to the cable and into the engagement mechanism; and transferring a first portion of kinetic energy corresponding to the trolley through the engagement mechanism and into a deflecting element deflecting along a direction of the cable.