Load-minimizing, trolley arrester apparatus and method

Details Load-minimizing, trolley arrester apparatus and method Load-minimizing, trolley arrester apparatus and method

2011-06-28

2011-06-28

Le, Mark T (Department: 3617)

Railways

Cable rails

Gravity

C104S249000, C104S254000, C104S115000, C104S117100

Reexamination Certificate

active

07966940

ABSTRACT:
A system comprising a cable held in suspension and a trolley traveling along the cable relies on a brake to control velocity and limit net downhill acceleration of the trolley. The trolley may include a brake pad positioned to contact the cable. At the downhill end of the ride, the lever actuating the brake is caught and lifted by a capture ring, thus relieving the braking load on the trolley. Also, the trolley engages a comparatively modest, second resistance mechanism, such as, for example, a system of springs, that gradually increases in resistance with distance of motion of the trolley thereagainst, bringing the trolley to a gradual halt at a rate to improve comfort of a rider and reduce acceleration forces (loads) on the trolley.

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Petzl, Rollcab instruction manual, p. 1-8, date unknown.

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