Patent ID: 8333155

Claim:
A trolley traveling along and suspending from a cable, the trolley comprising: a frame having a first end, second end, rail extending from proximate the first end to proximate the second end, and fulcrum spaced away from the first end toward the second end; a brake, comprising a first pad, connecting to the frame; a trimmer, having a second pad, positioned opposite the first pad; the trimmer, selectively adjustable by a user riding the trolley to provide a substantially continual clamping force by the first pad against the cable; a sheave mount connecting a sheave, rolling along a cable, to the fulcrum; a carriage having a user mount and selectively traveling along the rail; the carriage, selectively positionable along the rail by the user; the brake, dynamically controlled by the user by selectively distributing the weight of the user between the carriage and a tether moving the carriage toward the fulcrum of the frame.