Patent ID: 8424460
Filing Date: 2013-04-23
Classification: A63G,B60T,B61B,B61H

Abstract:
1. A zip line trolley comprising: right and left parallel, spaced-apart, vertically-oriented side plates; an inner beam at least partially sandwiched between lower portions of said side plates, said inner beam and said side plates being bolted together with bolts passing transversely through said side plates, said inner beam having a gallery of generally T-shaped cross section open at the bottom thereof that extends from about a longitudinal mid position of the trolley to about a rear end thereof; a main pulley rotatably secured between said side plates at about the longitudinal mid position of the trolley, said main pulley sized to fit over a suspended zip line cable so that said main pulley supports the trolley and a rider; a brake pad pivotally secured by a bolt and a nut between the side plates forward of said main pulley, said bolt passing through one side plate, through said brake pad, and through the other side plate, and into said nut, said brake pad having a generally upward-facing cable contact surface; a bumper partially sandwiched between front portions of said side plates and bolted therebetween, said bumper functioning as a rigidifying spacer between said side plates, said bumper serving to protect said side plates from mechanical damage, and said bumper having an upwardly-angled lower-front face; and a shackle for supporting a suspended rider slidably installed within said gallery, said shackle being securable within said gallery at different locations therein to variably adjust a force of the brake pad against an under side of a cable on which the trolley is suspended.