Abstract: There is described a step comprising a single foot secured to the floor for supporting a hinge system and a board onto which a user can step. The foot has an inclination ? with respect to the floor, wherein the inclination ? is fixed and lies between 45° and 80°. The hinge system installed on the foot provides a hinge with respect to the foot. The board extending in a plane is fixedly secured to the hinge system and hinges between a stowed position and a working position. The board is substantially horizontal when in the working position, and inclined at the inclination ? when in the stowed position. The board is adjacent to surfaces of the foot and of the cap onto the hinge system, and does not define any acute angle with these adjacent surfaces. The board has a recess that, upon hinging, always conforms to the cap.

Abstract: A vertical fall arrest safety device travels along a rail of a vertical track and is configured for quick attachment and detachment anywhere along the rail. The device has a mounting body having side rail engagements configured for slidably engaging behind the edges of a rail of the vertical track in use. The engagements are spaced and staggered so as to receive the rail therebetween when the mounting body is at an angle, and then slidably attach to the rail when the mounting body is twisted into alignment with the rail. The device also has a lever pivotally coupled to the mounting body at a fulcrum. As such, when a downward force is applied to a connection point of a distal end of the lever, an opposite distal end of the lever frictionally engages the rail.

Abstract: A ladder safety apparatus that is configured to be secured to an edge of a flat roof top wherein the present invention is configured to releasably secure a top end of an extension ladder so as to inhibit movement thereof. The present invention includes a roof top support member configured to be secured to a roof top proximate the edge thereof. A first ladder riser receiving member and a second ladder riser receiving member are secured to the roof top support member on distal ends thereof. A first grab rail member and a second grab rail member extend upward from the roof top support member providing grab rails during exiting from the top of the ladder. The first ladder riser receiving member and second ladder riser receiving member include a structure having voids to operably engage a portion of a ladder riser.

Abstract: A free-standing demountable window safety assembly adapted to rest, in use, on the floor inside a room containing a window opening in a wall, and against the wall containing the window, without engaging with the window opening, said assembly comprising: —?(i) at least two feet (125, 126) adapted to engage with the room floor?(ii) at least two arms (121A, 121B, 135A, 135B) adapted to engage with the room wall adjacent to but spaced away from the window opening; ?(iii) at least two side portions (125, 123A, 135A, 133A) each supporting an arm; ?(iv) at least one linking member (111A, 111C) adapted to link opposing side portions or opposing feet in a substantially rigid fashion. The invention also includes methods of manufacturing and using such safety assemblies.

Abstract: A system includes a clamp that includes a first arm, a second arm, and a threaded rod coupled to the first arm and the second arm. The threaded rod is configured to be substantially vertical when the clamp is clamped to the static structure. The clamp is configured to, while the user on a ground surface and in response to the nut being rotated about the threaded rod, a first jaw is urged towards a second jaw such that the static structure is clamped between the first jaw and the second jaw. The system further includes a first bracket configured to be releasably affixed to an upper portion of a first side rail of a base station of an extension ladder, and a second bracket that is configured to be releasably affixed to a lower portion of the first side rail of the base station of the extension ladder.

Abstract: An attachment for a ladder includes a pair of spaced rails secured together by at least one rung and a removable pin at an end for securing the attachment to a standard ladder.

Abstract: A personal climbing apparatus formed of a hanger having a blade extended from a shank and forming a gap therebetween; a foot-support platform that is oriented transversely to the shank of the hanger and coupled thereto and having a foot retainer; and a brace coupled between the foot-support platform and the shank of the hanger.

Abstract: A rigging system comprising a plurality of members including: a first hexagonal support piece comprising: six side members, six rod clamps, each one of the rod clamps being configured to receive and hold a rod piece and positioned between and connecting two neighboring ones of the side members, the each one of the rod clamps comprising: a gap open to outward from a center of the first hexagonal support piece, a latch configured to close the gap at least in part to hold the rod piece within the gap, a set screw hole configured for a set screw to be inserted to tighten the latch, and a rear hole configured for a screw or a bolt to be inserted toward the center of the first hexagonal support piece, and at least one side hole; a first set screw having a cross-section of size and shape configured to fit closely within a cross-section of the set screw hole; and a first connection bolt having a cross-section of size and shape configured to fit closely within a cross-section of the at least one side hole, wherein the

Abstract: A device includes an elevating work platform affixed to a drive unit that can move in any direction and rotate in place.

Abstract: A toe space module for elevating platforms, wherein the module wraps around the edges and bottom of the platform in order to transform tension stress into shear and compression stresses. Also, a platform with a toe space module attached, and method for manufacturing the platform and toe space module. Also, a combination toe space module and step, a platform with the combination toe space module and step, and methods for manufacturing the platform with the combination toe space module and step.

Abstract: A foldable quad-chord truss which can be connected end-to-end with like trusses. The chords of each pair of chords are rigidly attached, and connector members intermediate the ends are each swivelly attached to each of the chords of each chord pair to effect the folding into a compact shape for transport and storage. The connector members are adapted for attachment to beams or connector members thereof which beams may extend between a parallel pair of the trusses.

Abstract: A tower elevating assembly generally includes a platform assembly configured to move between a first elevation position and a second elevation position, a tower having a track assembly, wherein the track assembly includes first and second track portions, each being a single continuous structure, and a carriage assembly for providing support to the platform and moving within the track. A kit for a tower elevating assembly includes a platform assembly, a tower having a track assembly, and a carriage assembly configured for coupling with the platform assembly and the tower.

Abstract: A release device (10) is provided for use with a fall protection unit (12) having a lifeline (14) that can be deployed N in a fall direction to protect a worker (16) in a fall event, and includes a frame (22) configured to fix the release device (10) to a fall protection unit (12), a release member (24) mounted for movement from a lock position to a release position, a connection member (26) configured to connect the deployable lifeline (14) of the fall protection unit (12) to another piece of fall protection equipment connected to the worker (16), the connection member (26) having a locked condition wherein the connection member (26) is prevented from moving in a fall direction relative to the frame (22) and a released condition wherein the connection member (26) is free to move in the fall direction relative to the frame (22); the connection member (26) having a stop surface (34); and a stop link (28) mounted to the frame (22) to move from a engaged position to a disengaged position in response to the relea

Abstract: The present invention relates to at least a foldable step. The step features an upper and a lower step supported by a structure including a right side each having a vertical support member, an angled support member, and upper and lower step support members. A horizontal front support member provides support for the lower step. Left and right diagonal support members are slidably coupled to the upper step support members. A rear horizontal support member and optional diagonal members provide additional support to the upper step. The step is foldable into a folded position, by folding both the upper and lower steps upwardly. The step has a minimal profile in the folded position.

Abstract: A boom assembly for a lift device includes a plurality of telescoping boom sections. The plurality of telescoping boom sections include a base boom section, a mid boom section, and a fly boom section. The plurality of telescoping boom sections define an inner volume. The boom assembly also includes a push tube and a support member positioned within the inner volume. The boom assembly also includes a power track positioned within the inner volume that includes a plurality of movable links and a supported portion that interfaces with the support member. The push tube includes a second end portion opposite the first end portion of the push tube. The second end portion of the push tube is directly coupled to the base boom section.

Abstract: A work vehicle (1) including a suspended platform includes a work cage (10) to carry an operator, an arm mechanism (60) having a distal end, the distal end movable to an intended position by at least one of a rotating mechanism (30), an extension mechanism (40), or a derricking mechanism (50) installed on a vehicle body (20). The suspended platform (100) includes a support post (70) located at the distal end of the arm mechanism (60), a suspension frame (80), from which the work cage (10) is suspended, mounted on an upper end of the support post (70) to allow the operator to perform an operation above the upper end of the support post (70), and a lift mechanism (90) that raises or lowers the work cage (10) suspended from the suspension frame (80) with a plurality of lanyards (91) to a work position.

Abstract: A descender is for work at height, climbing, mountaineering, speleology or other practices using a rope. The descender device for a textile rope (F) includes a casing in which a cam mechanism (10) and an actuating lever (3) for the cam mechanism (10) are housed. The casing (2) includes a return element (13) for the rope (F). The cam mechanism (10) includes a lever pin (29) rotatably actuated by the actuation lever (3) and a movable cam (25) which is rotatably movable between a deactivation position and a locked position in which the movable cam (25) presses on the rope (F) against the return element (13). The lever pin (29) acts on a rocker member (32) which is integral with the movable cam (25) during a first rotation step of the lever pin (29) in a direction opposite to the activation direction of the movable cam (25).

Abstract: The aerial work platform comprises a control console (30) for moving the platform (20) to a working position at a height and for moving the chassis (2) on the ground in the forward (FAV) and backward (FAV) directions. To avoid confusing these two directions of movement because of the variable orientation of the console (30) with respect to the chassis (2), the direction of movement selected at the control console (30) is indicated to the operator by activation of at least one visual indication (63a, 64a, 64b, 70.i, 72) located on the side of the chassis (2) that corresponds to the direction of movement selected, or having a form pointing in the direction of movement (FAV, FAR) selected. A screen (40) also indicates the direction of movement (FAV, FAR) selected by a display transposing to the screen (40) the above visual indication system in relation to the azimuthal direction of the chassis (2) with respect to the console (30).

Abstract: A catwalk system having a pair of side trusses formed of a top chord and bottom chord connected by a plurality of vertical posts and diagonal posts. The bottom chords have a plurality of joints formed of a bottom plate, opposing side plates and wing plates that form a pocket. These pockets receive an end of floorbeams which are bolted to the side plates. The bottom plate also includes a wind brace section that receives an end of a diagonal wind brace therein. The fabricated side trusses are shipped to the job site where the catwalk is quickly and easily assembled by aligning a pair of side trusses in parallel space alignment and installing floorbeams in the pockets of opposing joints. To provide additional rigidity diagonal wind braces are installed in a zig-zag formation between diagonally opposite joints. This arrangement provides a quickly assembled catwalk that requires minimal assembly.

Abstract: Systems and apparatuses include a control box for a movable work platform. The control box includes a housing and a display supported by the housing. The housing is defined by a first side panel and a second side partially surrounding and extending from a lower enclosure to an upper enclosure spaced apart from the lower enclosure. At least one of the upper enclosure and the lower enclosure supports a control panel having a plurality of inputs. At least one of the inputs is a platform positioning mechanism in communication with a lift system configured to move the work platform vertically between a stowed position and a deployed position. The display is supported by the housing and is in communication with at least one of the plurality of inputs. The display is configured to receive and present output obtained by a sensor monitoring a parameter of the work platform.