Patent ID: 8978821
Filing Date: 2015-03-17
Classification: A61H,A62B,B61D,B65G,B66C

Abstract:
1. A fall arrest system comprising: a rail extending along a longitudinal axis, the rail comprising a floor and a longitudinal slot separating the floor into a first longitudinal section and a second longitudinal section; a trolley comprising a body, a brake sub-system, and a plurality of wheels rotatably coupled to the body, the plurality of wheels in rollable contact with upper surfaces of the first and second longitudinal sections; the brake sub-system comprising a brake pad, a lanyard connector, a resilient element, a vertical brake rod extending through the longitudinal slot while connecting the brake pad to the lanyard connector, the brake pad and the resilient element positioned above the first and second longitudinal sections, the lanyard connector positioned below the longitudinal sections, the brake pad comprising a brake plate and a plurality of set screws, tip portions of the plurality of set screws protruding from a bottom surface of the brake plate; the brake rod slidably coupled to the body so that the brake sub-system is alterable between: (1) an arrest state in which the tip portions of the set screws of the brake pad frictionally engage the uppers surfaces of the first and second longitudinal sections of the rail to prohibit rolling movement of the trolley along the rail; and (2) a free state in which the tip portions of the set screws of the brake pad are spaced a distance above the upper surfaces of the first and second longitudinal sections of the rail to allow rolling movement of the trolley along the rail; and the resilient element biasing the brake sub-system to urge it into the free state.