Rope descent control-brake
OwnerFinn Frestadinventor
Life of this patent
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Abstract
A rope descent control-brake is in three hingedly interconnected parts with springs at the hinges to urge the parts toward extended condition. Each part has a hole through it, and the rope is threaded in sinuous fashion through the three holes. In extended position, the device acts as a brake; while in collapsed position, the rope can be freely moved through the holes. A further lever assembly can be pivoted intermediate its length to the free end of one of the parts, and a handle can be pivotally mounted on a free end of the lever assembly and provides a control for the speed of descent.
Claims5
Rope descent control-brake which is movable along a rope and which locks firmly on to the rope when pulled, the rope descent control-brake comprising an upper part, a middle part, and a lower part, said upper part being hinged to said middle part by hinge-joint and said middle part being hinged to said lower part by a hinge-joint for swinging movement relative to each other about horizontal axes and each part having a hole through which the rope is passed, said holes being horizontal and perpendicular to the axes about which said parts are hinged when said parts are vertically aligned, and the lower part having an anchorage point for a safety-harness, springs mounted on the hinge-joints between said parts in such a manner as to cause said parts to move into the vertically aligned position as soon as the parts are released following a movement along the rope and thus providing further assurance that the control-brake locks on to the rope quickly and safely.
Dependencies are inferred from the claim text.