Patent attributes
An auto-return zip line trolley provides a vehicle that rides a suspended cable between a low point and a high point. The vehicle is urged along the cable by a remote-controlled drive wheel. A motor drives the drive wheel to roll along the cable, when engaged. When a load is applied to the vehicle, a spring-loaded sheave subassembly urges the cable away from the drive wheel, such that the vehicle rides freely from a high point to a low point on the cable. When the load is removed from the vehicle, the spring-loaded sheave subassembly urges the cable into engagement with the drive wheel to enable motor-powered propulsion of the vehicle from the low point to the high point of cable. A receiver inside the housing is in operational communication with the motor. A transmitter transmits a control signal to the receiver for regulating power and speed of the motor.