Cable sleeve for fall protection system

A cable sleeve for use with a safety cable of a fall protection system, the cable sleeve comprising a chassis and a braking system comprising:

• a constant-contact wheel that is rotatably mounted on the chassis,
• a rotor that is fixedly and coaxially connected to the constant-contact wheel;
• a cam plate that is rotatably mounted on the chassis so that the cam plate is independent of the rotor, the cam plate comprising a cam lobe and comprising a collar that is concentrically disposed about the rotor;
• and,
• a braking shoe that is movably mounted on the chassis and that is configured to reside in a first position in which a first gap is present between a braking surface of the braking shoe and an anvil surface of an anvil that is fixed to the chassis so that the safety cable can slide freely through the first gap between the braking surface and the anvil surface, and wherein the braking shoe is movable from the first position to a second position in which the braking surface is closer to the anvil surface than in the first position so that a second gap is present which is smaller than the first gap so that motion of the safety cable through the second gap is restricted by frictional forces imparted by the braking surface and the anvil surface,
• wherein the rotor comprises at least one permanent magnet that is fixedly attached thereto, and wherein the braking system further comprises at least one magnetically susceptible engaging item that is movably disposed in a disengaged position on the rotor and is held in the disengaged position by magnetic attraction of the permanent magnet, and,
• wherein the braking system is configured so that rotation of the constant-contact wheel above a predetermined threshold rotational velocity overcomes the magnetic attraction of the permanent magnet and urges the engaging item to move at least generally radially outward from the disengaged position into an engaged position in which the engaging item engages the collar of the cam plate causing the cam plate to rotate from a non-braking position to a braking position in which the cam lobe of the cam plate impinges on a cam follower that is connected to the braking shoe, causing the braking shoe to move from the first position to the second position.