The current subject matter describes a device and system including one or more movable arms containing one or more magnets that are caused to move relative to a non-ferrous material by motion of the device to generate eddy currents that cause a braking of the device. Devices of this disclosure may include one or more trolleys that moving along a coaster track and which contain braking arms having magnets that move due to inertial force and/or can be controlled by a remote server computer based on information obtained from the one or more trolleys as they move along the coaster track.

A centrifugal brake mechanism for a controlled descent device, and a drum device employing it. The brake mechanism comprises a circular wheel configured and operable to rotate about an axis of rotation, an axle extending along and rotatable about the axis inside a central cavity of the wheel and having two or more parallel shaft rods extending inside the cavity substantially perpendicular to the axis of rotation, a gear system for transferring rotations of the wheel into counter-rotations of the axle, one or more brake elements each having two or more pass-through bores for slidably mounting over the two or more parallel shaft rods, two or more springs mounted over the parallel shaft rods between the brake element and the axle, and a friction enhancement mechanism for increasing friction forces between the brake elements and the inner wall the wheel responsive to increase in angular velocity of the wheel.

A cable-braking apparatus includes a main body unit at which a main cable is positioned, a drive unit provided at the main body unit so as to generate a drive force, an elastic compression unit configured to compress or release the main elastic element using the drive force generated by the drive unit, a press unit actuated by the elastic compression unit so as to move a press plate thereof to thus press the main cable, and a movement control unit configured to lock or release an anchor pin to thus control movement of the press unit. The main elastic elements are compressed and released by the action of the gear train and the clutch, thereby offering an effect of preventing malfunctions.

A fall arrester used by utility linemen, communications and telecommunication workers that comprises a body defined by a pair of spaced apart frame members bridged by a floor, and a cam pivotally mounted to the body and sandwiched between the frame members. The cam includes teeth formed on its cam end and an eye formed at the end of the lever end. A carabiner or other connector is connected to the device through the eye and can be attached to the climber's full body harness. A rope passes between the frame members and between the cam and floor of the body.

A user-controllable braking system, including a descent tether connectable to a support and configurable for descending a user; a rigid body configured to be connectable between the descent tether and a user for enabling control of the descent by the user; a pulley rotatably positioned on the rigid body, the descent tether positionable around the pulley; a brake member yieldably positioned on the rigid body adjacent the pulley; a bias member operatively associated with the brake member to bias the brake member away from the pulley; and a lever pivotally connected to the rigid body and operable to bear against the brake member to controllably overcome the bias member and controllably bear the brake member against a portion of the descent tether. Operation of the lever by the user enables the user to controllably bear the brake member against the portion of the descent tether positioned around the pulley to provide a braking force.

Emergency egress systems carry multiple riders simultaneously accessing zip line catenary from higher, inaccessible, working locations to lower, safer areas. Hangers above the track line suspend trolleys to avoid weighting the catenary unduly at the high end, which might otherwise alter (reduce) clearance distances and safety of riders above a launch platform (deck). Catenary shape is controlled against approaching a launch deck by sequencing the release from the hangers of each trolley to roll along the catenary with its own rider. Autonomous braking, inter-trolley bumpers, and vertical stabilizers enable each rider to quickly occupy a seat (harness, etc.) and launch onto the track line, unconcerned with riders ahead or behind until underway. Multiple trolleys may thus load, launch, and in close proximity on a single line, regardless of the total weight of multiple riders.

Emergency egress systems carry multiple riders simultaneously accessing zip line catenary from higher, inaccessible, working locations to lower, safer areas. Hangers above the track line suspend trolleys to avoid weighting the catenary unduly at the high end, which might otherwise alter (reduce) clearance distances and safety of riders above a launch platform (deck). Catenary shape is controlled against approaching a launch deck by sequencing the release from the hangers of each trolley to roll along the catenary with its own rider. Autonomous braking, inter-trolley bumpers, and vertical stabilizers enable each rider to quickly occupy a seat (harness, etc.) and launch onto the track line, unconcerned with riders ahead or behind until underway. Multiple trolleys may thus load, launch, and in close proximity on a single line, regardless of the total weight of multiple riders.

A canopy tour system follow a route including multiple legs of track line, and may run multiple track lines in parallel along each leg, establishing the route of descent. Each leg extends between an associated upper station and lower station, used for loading, launching, receiving, and unclipping, respectively, riders of trolleys on the zip lines. A system of mechanical and electronic interlocks provides safety for users in remote locations, enabling individual riders to operate trolleys, including attaching and dis-attaching the trolleys from various track lines, unattended by other workers or employees of the canopy tour operation. Multiple trolleys may travel simultaneously and in close proximity to one another as a group on a single line. Each group traveling together is controlled by a single braking trolley ahead, behind, or in the midst of the group.

A canopy tour system follow a route including multiple legs of track line, and may run multiple track lines in parallel along each leg, establishing the route of descent. Each leg extends between an associated upper station and lower station, used for loading, launching, receiving, and unclipping, respectively, riders of trolleys on the zip lines. A system of mechanical and electronic interlocks provides safety for users in remote locations, enabling individual riders to operate trolleys, including attaching and dis-attaching the trolleys from various track lines, unattended by other workers or employees of the canopy tour operation. Multiple trolleys may travel simultaneously and in close proximity to one another as a group on a single line. Each group traveling together is controlled by a single braking trolley ahead, behind, or in the midst of the group.

A canopy tour system may include multiple track lines extending between associated upper and lower stations for loading, launching, receiving, and unclipping, respectively, riders of trolleys on the zip lines. A system of mechanical and electronic interlocks provides safety for users in remote locations, enabling individual riders to operate trolleys, including attaching and dis-attaching the trolleys from various track lines, unattended by other workers or employees of the canopy tour operation. Mechanical interlocks assure that a trolley cannot be properly engaged with a launch block on a track line until all such interlocks are properly closed. A master computer may communicate through a network, with all stations to verify and identify times and locations of users.