Patent ID: 8037978

Claim:
A zip line cable system, the system comprising: a) an elevated zip line cable having a first end secured to a first point and a second end to a second point; b) a trolley for transporting a load along said zip line cable; c) a conductive plate in communication with said trolley; d) a fixed magnetic field generator disposed at one end of said zip line cable, said magnetic field generator comprises a pair of spaced apart opposing magnetic elements, the magnetic elements forming a bifurcated substantially V-shaped configuration, the magnetic elements outwardly depending in a diverging manner from a base, the magnetic elements have distal ends providing a point of entry for said conductive plate and a magnetic field disposed therebetween; e) wherein when the conductive plate passes through the point of entry, the magnetic field provides sufficient drag to smoothly slow down and stop further movement of the trolley as the conductive plate moves between the magnetic elements toward the base.