A fall arrest device includes a bracket, a rotating member rotatably mounted to the bracket, a safety belt wound around the rotating member, a brake wheel connected to the rotating member, a brake block pivotally connected to the brake wheel, and a restoring spring fitting around the second segment and having one end thereof terminating in a ring that has an inner diameter smaller than an outer diameter of the first segment. Another end of the restoring spring is connected to the brake block. The brake wheel has a fixed rod having a first segment and a second segment. An outer diameter of the first segment is greater than an outer diameter of the second segment. The restoring spring urges the brake block to be located in a restoring position. Thus, the restoring spring could be prevented from falling out of the fixing rod.

A rope braking device includes a base, a one-way pulley, a handle, and a clamping part. The base has a guiding slot extends along a curve path. The one-way pulley is disposed on the base and is rotatable in a direction about a rotation center. A distance that is defined from the rotation center to the curve path is variable and has a relative minimum corresponding to a position of the curve path. The handle is pivotally connected to the base and has another guiding slot. The clamping part is slidably disposed in the two guiding slots simultaneously and opposite to the one-way pulley. When the handle pivots to move the clamping part to the position, a rope wound around the one-way pulley is compressed by the one-way pulley and the clamping part, so that the rope is movable in the direction and is unmovable in the reverse direction.

A rope braking device includes a base, a one-way pulley, a handle, and a clamping part. The base has a guiding slot extends along a curve path. The one-way pulley is disposed on the base and is rotatable in a direction about a rotation center. A distance that is defined from the rotation center to the curve path is variable and has a relative minimum corresponding to a position of the curve path. The handle is pivotally connected to the base and has another guiding slot. The clamping part is slidably disposed in the two guiding slots simultaneously and opposite to the one-way pulley. When the handle pivots to move the clamping part to the position, a rope wound around the one-way pulley is compressed by the one-way pulley and the clamping part, so that the rope is movable in the direction and is unmovable in the reverse direction.

A system for physical mobility activity of a person includes at least one fixed support member and at least one contact member to be worn by a person in motion. The support member and the contact member include at least one support surface and at least one contact surface, respectively. The support surface and the contact surface constitute the respective components of a hook-and-loop fastening connection including of hooks and loops, wherein the hooks have hook stems and hook openings. The hook openings on the support surface or contact surface in question are at least substantially all situated at the same side of the hook stems in question, when considered in a first direction parallel to the support surface or contact surface in question.

A system for physical mobility activity of a person includes at least one fixed support member and at least one contact member to be worn by a person in motion. The support member and the contact member include at least one support surface and at least one contact surface, respectively. The support surface and the contact surface constitute the respective components of a hook-and-loop fastening connection including of hooks and loops, wherein the hooks have hook stems and hook openings. The hook openings on the support surface or contact surface in question are at least substantially all situated at the same side of the hook stems in question, when considered in a first direction parallel to the support surface or contact surface in question.

A rope based fall protection device including a rotation unit, a brake unit, and a rope. A first end of the rope is connected to the rotation unit. The rope includes a first rope loop and a second rope loop that are wound around the rotation unit. A first retaining portion of a retaining ring is sleeved on the first rope loop and a second retaining portion thereof is sleeved on the second rope loop, such that the rope forms a rope section which has a fixed length between the second retaining portion and the first end and is wound around the rotation unit. When a free end of the rope is pulled by an external force to release the rope wound around the rotation unit in a direction away from the rotation unit, the retaining ring is broken to release the rope section of the rope. The external force is greater than or equal to a pulling force generated by a user's free fall. By releasing the rope section of the rope, the rotation unit rotates and simultaneously drives the brake unit to rotate to slow down or stop the rotation of the rotation unit.

A fall protection device includes a frame, a rotatable member being pivotally connected to the frame, a safety belt winding around the rotatable member, a braking plate, and a plurality of braking parts. A side surface of the frame has a connecting hole located on a center of the frame and a plurality of stoppers. The braking plate has a driven shaft passing through the connecting hole to be coaxially connected to the rotatable member. A number of the braking parts is the same as a number of the stoppers. The braking parts are pivotally connected to an inner surface of a plate body of the braking plate. When the braking parts are located at a locking position, an abutting portion of each of the braking parts is located at a position corresponding to one of the stoppers and abuts against one of the stoppers at the same time.

A fall protection device includes a frame, a rotatable member being pivotally connected to the frame, a safety belt winding around the rotatable member, a braking plate, and a plurality of braking parts. A side surface of the frame has a connecting hole located on a center of the frame and a plurality of stoppers. The braking plate has a driven shaft passing through the connecting hole to be coaxially connected to the rotatable member. A number of the braking parts is the same as a number of the stoppers. The braking parts are pivotally connected to an inner surface of a plate body of the braking plate. When the braking parts are located at a locking position, an abutting portion of each of the braking parts is located at a position corresponding to one of the stoppers and abuts against one of the stoppers at the same time.

A device, system and method are used for hoisting and lowering a load. The device has a front plate that may be displaced to reveal a sheave. The device also has a friction accessory. The friction accessory is arranged to create friction between a rope and the device when a load is suspended from the device using the rope and where the device is secured to a support structure. The system may be prepared by an operator, having ascended to an elevated location, and further allows the operator to lower the load from the elevated location prior to descending.

A speed-controllable lifter includes a movable plate, a fixed plate which connected with a hanging ring via a sliding rope. The movable plate is hanged on the sliding rope. A speed control device is provided in the fixed plate, having a stop hub, two stop pads, two arc-shaped stop pad supports and an adjustment means which includes an upper camshaft, a lower camshaft and an adjustment shaft arranged on the upper camshaft for adjusting an opening degree between movable ends of the two stop pad supports. A brake device is provided in the movable plate, having a brake drum, two brake pads, two arc-shaped brake pad supports and a brake means which includes a driving shaft, a driven shaft and a control bar arranged on the driving shaft for controlling a degree of the tightness of movable ends of the two brake pad supports.