Abstract: The present application relates to the technical field of linkage mechanisms, and provides a linkage operation assembly, a fall protection device and a fall protection system. The linkage operation assembly includes a fixed main body configured to be installed on an outer support surface of a rail and move along the rail; a second wheel body assembly installed on the fixed main body for rolling along an inner support surface of the rail and including a second wheel set and a drive rotary shaft; a third wheel body assembly installed on the fixed main body for rolling along an inner support surface of the rail and including a third wheel set and a driven rotary shaft; and a linkage member disposed between the drive rotary shaft and the driven rotary shaft. When the drive rotary shaft of the linkage operating assembly rotates, the second wheel set is driven to rotate, and the driven rotary shaft and the third wheel set are driven to rotate through the linkage member.

Abstract: The invention discloses a rail type anti-falling safety device including a primary bearing block, an anti-falling tongue through-groove is opened on an upper end face of the primary bearing block, an anti-falling tongue pin is provided in the through-groove, an anti-falling tongue is provided on and rotatable about the anti-falling tongue pin, the anti-falling tongue is pressed tightly against a T-shaped steel-rail surface under the action of an elastic element, the anti-falling tongue has a cam structure at the end pressed against the T-shaped steel rail surface and a hanging loop at the end far from the end pressed against the T-shaped steel rail surface. A first clamping block is provided on a lower end face of the primary bearing block. The invention allows adjustments to the groove width of the anti-falling device while the safety and reliability is ensured, thereby providing uninterrupted personal safety guarantee for the worker.

Abstract: A wireline traversal device may include an outer housing having a longitudinal slot, and an inner housing rotatably disposed within the outer housing. The inner housing includes a helical slot, a forward end of which is aligned with the longitudinal slot in the outer housing when the inner housing is in a home position. A forward end cap having a longitudinal slot and an inclined engagement surface is attached to a forward end of the outer housing. The longitudinal slot on the outer housing is aligned with the longitudinal slot on the forward end cap. At least two bearing members are rotatably disposed within the outer housing, with one bearing member attached to each end of the inner housing. The wireline traversal device may be used in a variety of applications in connection with a wireline, such as a zip line or safety line.

Abstract: A cable holder and a running element for a cable system of an anti-fall device, wherein the cable holder is reversibly rotatably mounted and the axis of rotation of the cable holder is offset parallel to a cable.

Abstract: A supporting and guiding device for a climbing formwork beam and to such beam, comprising a supporting body to be coupled to a building structure, with which supporting means for the beam are associated, and at least one pair of guiding pins for the beam which can be activated by snap action transversely on opposite sides with respect to the beam and are adapted to be arranged in front of portions thereof.

Abstract: Various implementations described herein are directed to a modular ledger of an integrated construction system. In one implementation, the modular ledger includes a rail, having a first end and a second end. Each end of the rail is configured to receive a coupling component. The rail has a plurality of holes configured to couple to bracing components of the integrated construction system.

Abstract: An anchoring device includes a track bar, a restricting member, and a locking device, wherein the track bar has a receiving groove. The restricting member is put into the receiving groove through open ends of the receiving groove. A width between a section of walls of the receiving groove and a width of a portion of the restricting member is greater than a width of a mouth of the receiving groove. The locking device includes a main body wherein a locking portion is disposed on the main body and is manipulatable to move between a first position and a second position. The main body slidably fits around the track bar. When the locking portion in the second position, the main body could slide to fit a flange of a fixture. After that, returns the locking portion back to the first position to fix the main body on the track bar.

Abstract: A ladder supporting device for supporting a ladder in upright orientation at an upright surface comprises a channel extending longitudinally from a first end to a second end arranged horizontally spaced across the upright surface with a backside facing the upright surface, a holding device located outside the channel distal to the upright surface, and at least one wheel rotatably supported on an axle connected to the holding device and passing into the channel which receives the at least one wheel such that the holding device is positionable longitudinally of the channel by rolling movement of the at least one wheel along the channel.

Abstract: A furling crane loading platform (1) comprising: a cantilever support base (3); a first stage (2A) pivotally coupled to the cantilever support base (3); and a second stage (2B) pivotally coupled to first stage (2A). In an unfurled configuration (2B) the first and second stages provide a substantially horizontal crane loading surface extending from a building edge (11). The platform is configurable into furled configuration (2A). The platform may further comprise a third stage pivotally coupled to the second stage, fourth pivotally coupled to the third stage, hydraulic actuators (16), controller for controlling the stages in a sequence, sensor for sensing the configuration of the stages, detachable cantilever support beams (4) with a downward transition portion (19), props (5) to prop the cantilever support beams against an under surface of a floor slab and lockout mechanism (17).

Abstract: Climbing equipment for the construction of a building, including a scaffold that at least partially surrounds the perimeter of a building floor and is provided with a walkable surface. The climbing equipment includes a traction device comprising a first portion integral with the scaffold, and a second portion connected to the first portion. The first portion includes a first coupling element adapted to grip a first coupling portion of the building, and the second portion includes a second coupling element, arranged at a different level than the first coupling element, and adapted to grip a second coupling portion of the building. The climbing equipment further comprises a moving system. When the first coupling element is released from the respective coupling portion, the moving system performs a relative movement between the first portion and said second portion of the traction device, so as to move the scaffold by a predetermined amount.

Abstract: An aerial cable treatment system having a cable surface preparation assembly and a coating assembly. The cable treatment system is translatable along an in-situ aerial cable. The cable surface preparation assembly can remove dirt and debris, such as carbon deposit, grease, mud, fertilizers, bird droppings, fungal growth, mosses, soot, ice, and like from aerial cables with varying sizes as it translates along the cable. The coating assembly can apply a coating to the outer surface of the in-situ aerial cable it translates along the cable.

Abstract: Climbing equipment for the construction of a building, including a scaffold that at least partially surrounds the perimeter of a building floor and is provided with a walkable surface. The climbing equipment includes a traction device comprising a first portion integral with the scaffold, and a second portion connected to the first portion. The first portion includes a first coupling element adapted to grip a first coupling portion of the building, and the second portion includes a second coupling element, arranged at a different level than the first coupling element, and adapted to grip a second coupling portion of the building. The climbing equipment further comprises a moving system. When the first coupling element is released from the respective coupling portion, the moving system performs a relative movement between the first portion and said second portion of the traction device, so as to move the scaffold by a predetermined amount.

Abstract: A infant walker system includes a frame with a first top rail; a second top rail; a first leg attached to the first top rail and configured to elevate the first top rail at a distance relative to a ground surface; and a second leg attached to the second top rail and configured to elevate the second top rail at a distance relative to the ground surface. The system also includes a harness secured to the first top rail and the second top rail, the harness being configured to secure an infant at a predetermined height relative to the ground surface; a first sliding joint slidingly engaged with the first top rail; a second sliding joint slidingly engaged with the second top rail; a first strap attached to the harness and to the first sliding joint; and a second strap attached to the harness and to the second sliding joint.

Abstract: A fall arrest device comprises a guide (3) for a track member (7) which, in use, passes through the device, a cam member (9) including a cam portion, and a clutch (21) responsive to at least one of the relative speed and relative acceleration of the fall arrest device and the track member. The clutch serves to determine when the relative speed and/or acceleration is at least a predetermined value. The clutch includes a trigger arm (19) connecting to the cam member so as to move the cam portion of the cam member toward the guide so as to lock the track member between the cam member and the guide when at least the predetermined value is attained.

Abstract: A hoist system and a method for lifting and lowering an object such as a boat include a support structure, a support member supported by the support structure and a hoisting assembly. The hoisting assembly includes an attachment assembly and a set of at least three flexible members operably coupled to the support member and the attachment assembly to retract and extend the attachment assembly vertically relative to a reference axis. The hoisting assembly is supported by the support structure and configured with the support member so as to space apart the flexible members from each other, and wherein each flexible member defines an oblique angle with the reference axis parallel to the vertical reference axis.

Abstract: Apparatus and associated methods relate to a dorsal wear-pad having an external, low-friction, high-wear-resistance surface, the dorsal wear-pad configured to be releasably coupled to a D-ring connection region of a fall-protection safety harness. In various embodiments, the dorsal wear-pad may project out and away from a wearer so as to prevent the D-ring from contacting a wall surface. For example, the dorsal wear-pad may have a D-ring aperture through which the D-ring may project. In some embodiments, the dorsal wear-pad may have a back shield to prevent a snap-hook connected to the D-ring from contacting a wearer's back. An exemplary embodiment may have two prominences, one on either side of the D-ring. Some exemplary dorsal wear-pads may advantageously protect both a wearer and the wearer's harness during sliding or leaning engagements with vertical surfaces.

Abstract: An arrangement for imparting translational movement of a load with respect to a columnar structure that takes the form of at least one flexible elastic member (e.g., bungee cord) that is disposed to surround a portion of the structure and a platform coupled to the opposing ends of the flexible elastic member. The platform is used to support the load and the ends of the flexible member are coupled to the platform in a manner such that the ends are free to rotate. Thus, the application of counter-rotational forces to these opposing end terminations will impart a tension to the flexible elastic member that ultimately causes the flexible member to flip over to relieve the tension. By continuing to apply the counter-rotational forces, the flexible member will continue to flip, and progress in translational movement along the columnar structure.

Abstract: A traveller for a fall arrest system including a body having a bore and a slot narrower than the bore linking to the bore to the exterior of the body. A load member is connected to the body for pivotal movement relative to the body and suitable for attachment to fall safety equipment. The body has a center of gravity positioned so that when the traveller is supported on a safety line passing through the bore, the body will be urged by gravity to rotate about the safety line towards a position in which the slot has a predetermined orientation relative to the safety line.

Abstract: An apparatus that provides selectively deployable worker access with fall protection to at least a portion of the top of a container disposed above the ground. A gangway and its associated fall protection cage are selectively deployable from an elevated platform over the top of the container. The gangway and its associated cage are slidably connected to the platform via a track carried along the side of the platform.

Abstract: The fall restraint traveler device has a hollow body structure, two or more spacers, one or more lanyards and a leash. The hollow body structure has a first end and a second end. A safety rope extends passing through both first and second ends. The body structure has an elongated slot extending between the ends. The two or more tubular spacers are placed internal of the body structure with the safety rope passing through each spacer. The one or more lanyards are for attachment to a climber. Each lanyard has at least one locking element. The device is aligned with and free to slide along the safety rope during ascent or descent of the climber and in the event of a fall, the at least one locking element tightens as it pulls on the safety rope pulling the rope out of alignment and thereby cinching to the rope.

Abstract: The fall restraint traveler device has a hollow body structure, two or more spacers, one or more lanyards and a leash. The hollow body structure has a first end and a second end. A safety rope extends passing through both first and second ends. The body structure has an elongated slot extending between the ends. The two or more tubular spacers are placed internal of the body structure with the safety rope passing through each spacer. The one or more lanyards are for attachment to a climber. Each lanyard has at least one locking element. The device is aligned with and free to slide along the safety rope during ascent or descent of the climber and in the event of a fall, the at least one locking element tightens as it pulls on the safety rope pulling the rope out of alignment and thereby cinching to the rope.

Abstract: A fall arrest anchor trolley for arresting the fall of a user. In one embodiment, the invention can be a fall arrest trolley comprising: a body a brake sub-system, and a plurality of wheels rotatably coupled to the body, wherein bottoms of the plurality of wheels collectively define a rolling plane; the brake sub-system comprising a brake rod, a brake pad connected to the brake rod, a lanyard connector connected to the brake rod, and a resilient element; the brake rod slidably coupled to the body so that the brake sub-system is alterable between: (1) a free state in which the brake pad is spaced a distance above the rolling plane; and (2) an arrest state in which at least a portion of the brake pad is located within the rolling plane; the resilient element biasing the brake sub-system into the free state.

Abstract: The invention provides a fall protection system for an individual maneuvering about a structure, the structure having structure sections disposed equidistant from each other and at least one transverse section extending between the equidistant sections, the system generally including a first cable support disposed on one of the equidistant structure sections, a second cable support disposed on another of the equidistant structure sections, a transverse cable support extending between the first and second cable supports, a rigid member operably associated with the transverse cable support and configured to span the distance between the first and second cable supports, and a personal fall arrest assembly attached to and movable relative to the transverse cable support, the transverse cable support and the rigid member are further configured to move relative to the equidistant and transverse structure sections and relative to the first and second cable supports.

Abstract: A horizontal lifeline traversing device is capable of traversing intermediate lifeline supports without detachment from the lifeline but is easily attached to or detached from the lifeline. A paddle wheel having a plurality of radially spaced apart paddles prevents the device from vertical movement. The paddles are made of first and second sets of paddles rotatable about the same axle. The first set is substantially fixed on the axle but the second set is movable axially between a first position where it is axially spaced from the first set and a second position where it is in substantial axial alignment with the first set. A spiral spring biases the second set into the first position. By rotating the second set of paddles slightly, it can be moved axially into the second position where the device can be attached to or detached from a horizontal lifeline.

Abstract: Methods and apparatus access the boom (jib) of a crane, e.g. of the type commonly employed on offshore oil rigs. In place of the extensive scaffolding structure normally required to provide secure access to a crane boom (10) for maintenance and inspection, a carriage (11) is mounted on the boom either on a temporary or permanent basis. The carriage (11) includes a stable platform (22) or floor capable of supporting one or preferably two workers (23) to provide comfortable and safe access to the boom for e.g. a re-painting operation. The carriage (11) is supported on the boom via wheels (16) and is movable along the boom to provide access to the full length of the boom. The distal end may be of tapering section and it is preferred that the wheels (16) of the carriage are adjustably mounted to take account of the taper.

Abstract: A removable crane boom lifeline system comprising a plurality of support elements, each support element including a base post having a top and a bottom securing members for securing to respective top and bottom side longitudinal lattices of the crane boom, and an extendable post longitudinally and slidingly engaged with the base post, the extendable post being provided near a top extremity with a lifeline anchor for attaching a lifeline thereto.

Abstract: A non single point of failure member slide having two members that extend from a second washer, downwardly through a sheath to a belt. The glide being slidably disposed within a track member.

Abstract: A guide track system and a bracket assembly thereof for supporting guide tracks thereof are provided. The guide track system comprises a first guide track piece, a second guide track piece, and a bracket assembly configured to support the first and second guide track pieces. The bracket assembly comprises a mounting feature configured to be mounted to a support structure, and a guide track supporting feature connected to the mounting feature and configured to support a portion of the guide track mounted thereon. The guide track supporting feature, in turn, comprises a body having a first end, a second end, and a longitudinal axis extending through the first and second ends, wherein the first end is configured to be coupled with an end of the first guide track piece, and the second end is configured to be coupled with an end of the second guide track piece.

Abstract: A shuttle member for a horizontal lifeline system having at least one elongate line attached between at least two anchorage points. The shuttle member includes: a body having: (i) an upper portion configured for attachment to the line by at least partially surrounding the line; (i) an intermediate portion that, together with the upper portion, defines at least one passage slit that is sized such that the elongate line cannot pass therethrough; and (iii) an attachment portion configured for attachment of at least a portion of a lanyard. A shuttle member arrangement and a passing method are also disclosed.

Abstract: Mobile scaffolding units include a vehicle for movement across ground surface, a stationary platform rigidly fixed to the vehicle at a predetermined immovable height above the ground surface, and a gantry platform operatively connected to the stationary platform for movements between a retracted position where the gantry platform is nested adjacent to the stationary platform, and an extended position wherein the gantry platform extends laterally outwardly from one or another lateral side of the stationary platform to provide an operator on the gantry platform an extended horizontal reach laterally of the vehicle. The mobile scaffolding units allow an operator to work at elevated heights and with lateral reach in one area of a work zone (e.g., to trim roadside vegetation) and then move to another area of the work zone without requiring an operator to dismount from the gantry platform.

Abstract: The invention relates to a traveller (1) for the construction of engineering works, comprising two structures, namely: a securing structure (2) for securing to the already built engineering work, and a working structure (3) on which construction of the work advances. The traveller is characterised in that the securing structure (2) comprises: a first end ring (6) and a second middle ring (7), both of said rings (6, 7) being coupled to the periphery of the section (27) of the already built work; at least one transom bar (9) that joins the end ring (6) and the middle ring (7) on the side of the carriage (1); and connecting elements between the end ring (6) and the middle ring (7). The working structure (3) comprises exterior formwork (25) and floor formwork (23).

Abstract: A mechanism directed to the art of rolling ladders is provided. A swivel roller capable of being attached to a rolling ladder to enable the rolling ladder to traverse an interior corner. The swivel roller has a mounting bracket with a hinged member and first and second wheels for supporting and moving the rolling ladder along a rail.

Abstract: The present subject matter provides a multipurpose cantilever skidding frame having a first frame structure, a second frame structure and two connection beams integrally forming a rigid structure to provide longitudinal and lateral movement for an exemplary cantilever. The present subject matter also provides a drilling rig that enables a cantilever to be moved in both longitudinal and transverse directions.

Abstract: A platform system including a guide establishing a platform translation axis and having upper and lower surfaces, a carriage translatably coupled to the guide along the platform translation axis and engaged with the upper and lower surfaces of the guide, a platform coupled to the carriage and including at least a portion that is pivotable in a direction transverse to the platform translation axis, and a stepway movably coupled to at least one of the carriage or the platform.

Abstract: A track having a stopping means that can stop a puck member from descending an undesired distance. After stopping of the puck member, the user can relocate the puck member within a channel for continued downward movement within the channel.

Abstract: A ladder system includes an overhead track system, a ladder, a latch and a carriage. The overhead track system includes a first guide track and a second guide track. The carriage is operatively configured to move longitudinally along the first and second guide tracks and to move laterally between the first and second guide tracks. The ladder is pivotally mounted to the overhead track system. A lateral carriage brake is provided which prevents lateral movement of the ladder, and a longitudinal carriage brake is provided to prevent longitudinal movement of the ladder. The latch is operatively configured to affix the ladder to the carriage.

Abstract: Personnel safety apparatus is provided on a machine to prevent users from falling while moving between access points on the machine. The apparatus includes a rail having a first end positioned adjacent a first user access point and a second end positioned adjacent a second user access point to define a rail path that spans a vertical elevation. A carrier is movably coupled to the rail and has a first mode, in which the carrier engages a fixed position on the rail, and a second mode, in which the carrier is permitted to move relative to the rail. A tether extends between a harness on the user and the carrier to secure the user to the machine.

Abstract: The present invention relates to a securing device for protecting individuals against falling, with two stop elements which can be attached releasably to a positionally fixed securing element and can be connected via a connecting element to the individual. Each stop element has a locking device which can be adjusted between an unlocking state, in which the stop element can be attached to the securing element or released therefrom, and a locking state, in which the stop element cannot be released from the respective securing element. A coupling device is coupled to the locking devices of the stop elements in such a manner that, in the unlocking state, the locking device of the other stop element is blocked in its locking state. A preferred construction of the coupling device has a blocking lever which can be pivoted into a blocking position for blocking the locking device in its locking state.

Abstract: A beam anchor. The beam anchor includes an elongate cross-member, a lanyard attachment structure attached to the cross-member, a pair of first and second spaced apart beam capturing members attached to the cross-member. Either or both capturing members may have a locking mechanism that is cantilevered from the capturing member, and the lanyard attachment structure may have a lanyard attachment ring connector that is capable of rotating about the cross-member but that is constrained to a fixed position along the cross-member by use of a ring or partial ring structure attached to the cross-member that extends through a slot in the lanyard attachment ring connector.

Abstract: A traveller for a fall arrest system comprises a body having a passage therethrough, a slot narrower than the passage linking the passage to the exterior of the body, and a load member suitable to attach the traveller to fall safety equipment. The slot is formed between an inner gate extending outwardly relative to the passage and an outer gate extending inwardly relative to the passage, the inner gate and outer gate having respective opposed convex surfaces defining the slot between them. The traveller is arranged such that when the traveller is mounted on a support the inner gate and outer gate lie on a common radius of respective concentric circles about the support.

Abstract: The fall arrester (10) is part of a climbing protection system for preventing a user of a ladder, a platform or the like from falling. The fall arrester (10) is movable along a guide rail (12) and has a rotatably mounted pawl (18) which, in the event of a fall, runs against catching stops (16) in the guide rail (12). A connecting element (40) is attached to the pawl (18) and the user can be secured to the connecting element (40) by a lanyard. The connecting element (40) is hinged to the pawl (18). The connecting element (40) can be hinged to the pawl (18) such that the connecting element (40) is coupled releasably rotation-resistant to the pawl (18) and the coupling (50, 52) is released in the event of a predetermined force on the connecting element (40). The connecting element can be formed as a damping element (40) which deforms in the event of a predetermined force.

Abstract: A ladder assembly for use with movable shelving is disclosed. The ladder assembly may comprise an overhead track assembly, a carriage, and a ladder. The overhead track assembly includes a first guide track and a second guide track. The carriage is operatively configured to move longitudinally along the first and second guide tracks. The ladder is pivotally and slidably mounted to the carriage. The ladder has an operating position and a stored position. The operating position is located in an open available aisle of the movable shelving. The stored position may be located substantially vertical and outside of the aisle of the movable shelving allowing the movable shelving to close the aisle without interference from the ladder.

Abstract: A fall arrest device having a safety support whilst allowing movement of the device on an elongate support. The fall arrest device including, a sliding element, first and second cam elements, first and second links, and an attachment. The first and second links connected together to mutually rotate about a third axis separated from a first and second axes, and the attachment moving relative to the links, so that the first and second locking cams can be moved between their first and second positions by loads applied to the device through the attachment.

Abstract: A fall protection safety device including a braking mechanism comprises a first component, a second component configured and arranged to move relative to the first component, and at least one magnet operatively connected to one of the components and another of the components being at least partially made of a non-ferromagnetic and electrically conductive material. The at least one magnet and the non-ferromagnetic and electrically conductive material creating an electromagnetic field force when the second component moves at a rate greater than a predetermined rate relative to the first component.

Abstract: A scaffold is described comprising at least two horizontally adjacent scaffold sections, the scaffold sections being defined substantially by lengthwise ledgers, transverse ledgers and uprights, characterized in that the scaffold comprises a guide means adapted to be able to displace in substantially horizontal direction therealong a displaceable platform corresponding thereto and guided thereby; a method for erecting the scaffold, and a mobile platform.

Abstract: Systems and methods are provided for interfacing to a guide rail. Provided is an improved rail interface wheel is provided including a continuous U-channel formed about a periphery of a puck shaped wheel body. The rail interface wheel is configured to spin about a spin axis. The U-channel includes a primary diameter measured parallel to the spin axis and a secondary diameter measured along a line that is coplanar with but not parallel to the spin axis. The secondary diameter is preferably at least as great as the primary diameter. The rail interface wheel may be used in combination with a movable structure, such as a library ladder.

Abstract: A slide displaced along a life-line. The slide includes a body provided with a guide duct through which a cable passes. The slide further includes a handle that is capable of interacting with an attached connecting mechanism. The handle is articulated relative to the body such that the handle has a freedom of rotary movement of axis in a direction perpendicular to a longitudinal axis of the guide duct and different from a direction of traction of the connecting mechanism of the handle.

Abstract: Embodiments of the invention provide a fall protection system having first and second truss members, at a first distance from each other; first and second slotted housings at a second distance from each other, each housing defining a first track therein; a first plurality of connecting members connecting the first truss member to the first housing; a second plurality of connecting members connecting the second truss member to the second housing; and a first plurality of cross members connecting the first housing to the second housing. Some fall protection systems include at least two spaced apart support members and may have a length ranging from about 10 feet to about 2,000 feet in length.

Abstract: A device for a guide rail (1) for a scaffold (2), in which the guide rail (1) is connected to a building (4), and wherein the guide rail (1) is movable between an inactive, stowed away position and an active position.

Abstract: A cart for carrying a lineman along power line conductors includes a basket, vertical supports, a frame overhanging the basket, the frame mounting rollers which engage the conductors. The frame, vertical supports and basket define a generally C-shaped opening between the frame and the basket through which the conductors pass into vertical alignment with the rollers on the frame. The basket includes a wall remote from the opening which extends upwardly and away from the opening to provide a protected area for the lineman, the vertical supports being positioned between the opening and the area for protecting the lineman from conductors passing through the opening. The cart includes a safety cable affixed to the basket at the opening and removably attachable to the frame at the opening to provide a structural connection between the basket and the frame for strengthening the cart structure during cart movement.