Patent attributes
A trolley braking system for smoothly reducing the speed of a rider supported by a harness on a cable or rope approaching a landing platform comprises a vessel containing a fluid of selected viscosity and having a turbine rotatably mounted on a shaft in the interior. A braking cable is secured to a reel on the turbine shaft outside the cylinder and routed through a pulley to a braking block, which is slidably mounted on the cable between the trolley and the landing platform. The system may also may also include turbine blades of adjustable dimensions, so that the braking force may be controlled. The system may also include a counterweight suspended by a retraction cable which is coupled to the turbine shaft to rewind the braking cable on the reel for repeated use.
