Abstract: A utility scaffold is designed to be repeatedly broken down into straighter components to reduce the space requirement for storage and shipment. The scaffold has first and second ladder frames, each comprising a plurality of vertical supports, a plurality of horizontal supports, and a plurality of releasable connections. The horizontal supports are releasably connected to the vertical supports by the releasable connections to form a rigid ladder frame structure. The releasable connections include a male wedge protrusion and a female receiver configured to receive the male wedge protrusion. The female receiver has a passage therethrough, with the passage having a tapered interior surface. The male wedge protrusion and the tapered interior surface are configured to abut when the vertical support and the horizontal support are mounted together via the releasable connection. A fastener is optionally used to secure the releasable connection.

Abstract: A horizontal scaffold member having a primary end connector and a secondary end connector. Each end connector is configured to couple to a cup or rosette on a vertical scaffold member. Each end connector includes a wedge assembly having a handle and a wedge, movable with respect to the connector to a latched and unlatched position. The primary wedge assembly has a primary and tertiary handles, with the tertiary handles connected to the secondary wedge assembly by a cable, and configured so that moving the primary and tertiary handles simultaneously to an unlatched position also moves the secondary wedge assembly to an unlatched position.

Abstract: A scaffold ledger providing a raised support surface of the elongate structural member with the opposed ledger heads being downwardly and outwardly offset. Each ledger head includes cover flaps that extend the raised support surface above the ledger heads in a cover position. The scaffold ledger cooperates with scaffold posts and scaffold planks to allow for a continuous work platform above an intermediate scaffold support post and/or across supporting ledgers.

Abstract: A stabilizer, especially for a typical interior style baker scaffold, painters scaffold, and the like; used in homes and or buildings largely by various trades reduces the undesired movement of the scaffold. The stabilizer includes a first C-shaped coupler to secure a support bar at a first bar end and a second C-shaped coupler to support a second bar end to the scaffold. This stabilizer will adapt to the typical scaffold frame, and works to eliminate the wobble, wiggle, shake and sway from the scaffold when it is erected as a single piece or as multiple pieces stacked on top of themselves for additional height.

Abstract: A fastening unit for attaching a first beam to a second beam is provided, wherein the second beam is arranged substantially perpendicularly to the first beam, the fastening unit having a first axis and a second axis, wherein the second axis is substantially perpendicular to the first axis. The fastening unit comprises a connecting member extending in a direction parallel to the first axis of the fastening unit and having a first edge portion, a second edge portion and a central portion, the connecting member further comprising a coupling element.

Abstract: An aligning tool in the field of wind turbines is provided. The aligning tool has a first and second section. The second section has an outside diameter tapering down in a direction away from the first section. The aligning tool is connected to a fastener and can easily catch a corresponding hole.

Abstract: A support mechanism (20) for mounting a wheelchair back to a wheelchair post including at least one generally horizontally extending support pin (30), the support mechanism (20) comprising a hanger arm (24) having a downwardly opening hook (26) defining an upper support point and a self-locking latch (34) pivotally mounting to the hanger arm (24), the latch defining a locking notch (40) and a stop notch (42), the latch (34) being pivotal between a locked position in which the latch locking notch (40) and the hook (26) define a substantially closed hole around the support pin (30) and an unlocked position in which the pin (30) is seated in the stop notch (42) such that the latch (34) is secured open so the hanger arm hook (26) can be connected to or removed from the wheelchair post support pin (30); the latch (34) is shaped and weighted such that the latch can be moved to the locked position under the force of gravity.

Abstract: The invention relates to a vertical frame made of metal, particularly a scaffolding frame, having at least one first vertical shaft (21) and a bar-shaped, horizontal transversal arm (23) extending away from the same, the shaft and arm being permanently connected to each other, having the following characteristics: a first perforated disk having a plurality of openings is permanently mounted to the shaft (21), wherein the perforated disk is disposed concentrically to the shaft (21) and surrounds the shaft (21) in a flange manner; at least one first mounting device is provided on the shaft (21) at a distance to the perforated disk for mounting a fall-protection means; the transversal arm (23) on one end thereof has a first connecting head, and on the second end thereof facing away from the first end has a second connecting head by which the transversal arm (23) can be secured, or is secured, on a second vertical shaft (21) via a second perforated disk equipped with a plurality of openings by forming a vertical

Abstract: In a method for manufacturing an element (8) of a modular scaffolding system, an at least partly galvanized pipe part (10) having a first end (12) and a second end is provided, together with an at least partly galvanized first connection head (40) which is designed to be connected to the first end (12) of the pipe part (10). A weld (24), which connects the first end (12) of the pipe part (10) to the first connection head (40), has an internal weld surface (24b) and an external weld surface (24a). The internal weld surface is proximal to the pipe part (10) and/or the connection head (40), and the external weld surface is proximal to an outside environment (60) of the pipe part (10) and the connecting head (40). A protective layer covers the external weld surface, such that it is screened off from the outside environment (60).

Abstract: An arrangement includes a scaffolding component having a connection head and a vertical scaffolding element extending in the direction of a longitudinal axis with a projection fastened thereto. A wedge is plugged, in a locking position, through two wedge openings in the connection head and through an aperture in the projection. Between the upper and lower head part of the connection head a slot is open towards the front and with which the connection head is plugged onto the projection. The slot has a shoulder of the upper head part which extends downwardly from horizontal upper slot surfaces formed in an insertion region of the slot and which is arranged above the horizontal upper boundary surface of the outer projection part. The shoulder is bounded downwardly with a horizontal shoulder slot surface via which the shoulder is supported on the horizontal upper boundary surface of the projection.

Abstract: A scaffold mount bracket having an upper horizontal mount member, a wedge head, a lower horizontal mount member, a clamp, a vertical mount member, the vertical mount member having coupled proximate to the upper end thereof, and orthogonally thereto, the upper horizontal mount member and coupled to a lower end of the vertical mount member, and orthogonally thereto, the lower horizontal mount member. Coupled to the top of the vertical mount member is an attachment member having an aperture or structure for receiving, either directly or indirectly, a cable for hoisting or lowering a scaffold to which the invention is mounted or for hoisting or lowering a separate scaffold member or structure.

Abstract: The subject invention is a clamp that has two halves of an annular ring hingedly connected at one end and capable of being securely fastened to each other at the opposite end. The annular ring is sized to fit tightly around a vertical support post. An upper surface of the annular ring has an upper annular channel, while the lower surface of the annular ring has a lower annular channel. When the clamp is fixed to the vertical support post, a horizontal support adaptor may fit into both the upper and lower annular channels. A resilient engagement strip or button on the adaptor is placed into contact with the lower annular channel in this position and frictionally engages the lower annular channel to prevent lateral movement of the adaptor on the annular ring until such time as the adaptor may be securely attached to the annular ring.

Abstract: An attachment member and a solar cell array are disclosed. The attachment member includes a first member; a second member on the first member; and a fixing member that fixes the first and second members. The first member includes a bottom portion; two first side walls facing each other. The second member includes a top portion; two second side walls facing to each other. The first and the second side walls are alternately arranged and face to each other. Each of the first and second side walls comprises an engagement portion. The engagement portion of one of the first side walls adjustably engages in height direction with the engagement portion of one of the second side walls. The engagement portion of the other one of the first side walls adjustably engages in height direction with the engagement portion of the other one of the second side walls.

Abstract: A holder assembly for holding multiple wiper assemblies includes a plurality of end spacers adapted to contact and separate wiper assemblies at a toe and heal thereof and a center clamp adapted to be disposed about and retain the wiper assemblies together.

Abstract: The invention relates to a fastening member for fastening of elements, which fastening member has at least a first side and a second side, wherein the first side of the fastening member has at least two transversal extensions. The fastening member has at least one longitudinal extension, and at least two holes, in the longitudinal axis of the fastening member. The invention further relates to a system and a method for manufacturing a fastening member used for fastening of elements, and an arrangement and a use for fastening elements.

Abstract: The invention relates to a scaffolding component (45) with at least one connection head (61) for forming a releaseable connection with a vertical scaffolding element (41) extending in the direction of a longitudinal axis (47). On this scaffolding element is fastened a projection (44) which extends transversely to its longitudinal axis (47) and which has an aperture (55) for the insertion of a wedge (62). The connection head has an upper head part (74) with an upper wedge opening (80) and a lower head part (75) with a lower wedge opening (81), for the wedge (62) which can be inserted through the wedge openings (80, 81). Disposed between the upper head part (74) and the lower head part (75) is a slot (67) which is open towards the front and which is intended for the fitting of the connection head (61) onto the projection (44).

Abstract: A method for manufacturing an element (8) of a modular scaffolding system, comprising: providing an at least partly galvanized pipe part (10) having a first end (12) and a second end; providing an at least partly galvanized first connection head (40) which is designed to be connected to the first end (12) of the pipe part (10); forming, through welding, a weld (24) which connects the first end (12) of the pipe part (10) to the first connection head (40), the weld (24) comprising an internal weld surface (24b) and an external weld surface (24a), which internal weld surface is proximal to the pipe part (10) and/or the connection head (40), and which external weld surface is proximal to an outside environment (60) of the pipe part (10) and the connecting head (40).; and covering the external weld surface with a protective layer, such that the external weld surface is screened off from the outside environment (60).

Abstract: A rack for storing elongate core sample boxes is formed from two separate frames each having three upright posts formed of tubular steel and a plurality of steel tubes extending across between the posts and welded to the posts. The frames can be transported in assembled form and then connected across the top and bottom of the uprights by metal bridging members with C-shaped inserts into the ends of the posts. The structure is held together and braced by diagonal braces which attach to tabs on the bridging members by a wedge drive into a slot in the tab.

Abstract: An adjustable pipe coupling assembly (10) has first and second clamps (30, 32), rotating elements (38, 40, 44) for the clamps, first and second pipes (16, 18), and first and second pivot elements (60). The clamp (30) includes opposed ears (52, 54) which locate the pipe (16) therebetween. The pipe (16) can pivot about an axis. The clamp (32) includes opposed ears (52, 54) which locate the pipe (18) therebetween. The pipe (18) can pivot about an axis. In use, rotating the clamps adjusts the horizontal angle between the axes, and pivoting the pipes about their respective pivot means adjusts the vertical angle between the pipes.

Abstract: A scaffold system and method having a hollow horizontal member with an internal wedge head at each end thereof, and internal wedge assembly with an external handle, and a vertical member having affixed in coaxial alignment therewith at least one grid patterned rosette. Each internal wedge head at the end of the horizontal member is configured to couple to the grid patterned rosette coupled to the vertical member substantially simultaneously using the wedge assembly mechanism.

Abstract: A closure device for connecting two parts includes a first connecting module and a second connecting module. The first connecting module can be arranged on the second connecting module in a closing direction, is mechanically latched with the second connecting module by a latching means in a closed position, and is held at the second connecting module against the closing direction. The first connecting module can be released from the second connecting module by movement of the first connecting module in an opening direction. A form-fit element is arranged on one of the connecting modules, which is formed to engage a recess on the other one of the connecting modules after establishing the latching of the first connecting module with the second connecting module by moving the first connecting module relative to the second connecting module against the opening direction.

Abstract: A scaffolding beam coupler for coupling a scaffolding pipe and a beam having a flange with two flange sections, the scaffolding beam coupler comprising: at least two spaced-apart jaws engageable with the flange of the beam, each one of the flange sections being engageable with a respective one of the jaws; and at least two transversal members, each one of the transversal members being connected to two of the spaced-apart jaws and at least two of the transversal members being spaced-apart from one another and preventing the connected jaws from moving apart when coupled with the beam. There is also provided a method for manufacturing a scaffolding beam coupler and a method for coupling a scaffolding pipe and a beam.

Abstract: A swing head assembly with a swing head and pin affixed to a first horizontal member. A vertical member with a rosette positioned in coaxial alignment therewith. The rosette has radially arranged cut-outs for receiving the swing head assembly. The swing head assembly is rotatably coupled to the rosette. A second horizontal member has a horizontal member head at an end thereof. The rosette is also able to also receive mating elements of the horizontal member head, the second horizontal member having therein an internal wedge assembly with a wedge portion that extends and retracts from the horizontal member head to lock and unlock the horizontal member head to the rosette. The invention further includes a horizontal member having a swing head assembly at one end and an internal wedge assembly at the second end thereof.

Abstract: The invention is an end connector for a horizontal scaffold member where the top of the end connector is inserted into the interior of a scaffold pipe. The invention includes a locking latch that includes a rotating latch member and a rotating lock that interfere when the latch is locked.

Abstract: A modified scaffold support post includes areas of reduced diameter, intermediate the length of the support post, having connecting rosettes secured to these reduced diameter areas. Preferably the areas of reduced diameter correspond to diameter of support tubes used as uprights in scaffold frames in North America (approximately 1.69 inches in outer diameter). Preferably the areas of reduced diameter are formed by swaging a tube of a larger diameter, typically approximately 1.90 inches. The modified support post is advantageously used with scaffold frames with connecting rosettes appropriately positioned on the uprights of the scaffold frames.

Abstract: A coupling spigot for connecting two scaffold legs one atop the other is designed to use a twist lock for securing the upper scaffold leg to the coupling spigot. A locking collar is fixed to a stop collar of the spigot. The locking collar includes receiving slots for receiving locking projections provided adjacent a bottom edge of the scaffold leg. Locking slots are connected to the receiving slots whereby an upper scaffold leg may be inserted on a coupling spigot of a lower scaffold leg and retained thereon by a twist lock.

Abstract: In another embodiment, a connector assembly can comprise: a first side collector, comprising a first panel engagement region comprising a first receiving area that has a size to attach onto an edge of a first panel; and a second side collector, comprising a second panel engagement region comprising a second receiving area that has a size to attach onto an edge of a second panel. The first side collector and second side collector can be configured to directly mate with each other to hold to panels together.

Abstract: A locking connector includes: a first head part; a plate-like base covering a plate surface of the first head part, a supporting part one end of which is supported by the base; first and second resilient parts positioned along the plate surface of the base from the supporting part, the first and second resilient part being resiliently deformable in a first direction substantially perpendicular to a direction C from the base end of the first head part to the fore-end of the first head part; first and second arm base end parts extending from end of the first and second resilient parts, respectively; first and second arm parts extending from the first and second arm base end parts, respectively, in the direction C; and first and second latching parts which are protrusions provided on the first and second arm parts, respectively.

Abstract: A scaffold includes a plurality of upright posts, a plurality of transverse posts, a plurality of locking units, a plurality of oblique posts and a plurality of fasteners. Thus, the upright posts, the locking units, the transverse posts, the oblique posts and the fasteners are detachable from each other so that the scaffold is detachable before assembly, thereby facilitating packaging, storage and transportation of the scaffold. In addition, the upright posts, the locking units, the transverse posts, the oblique posts and the fasteners are combined together by a worker himself so that the scaffold is assembled easily and quickly without needing aid of any hand tool, thereby greatly facilitating the worker mounting the scaffold.

Abstract: A device (20) for fastening a vehicle inner lining (14) to a lining support (12) includes a holding element (22) and a receiving element (24). The receiving element (24) has a latching portion (26) that is laterally open and into which the holding element (22) can engage such that it is fastened to the receiving element (24) in the axial direction. Furthermore, the invention also relates to a method of mounting and demounting the vehicle inner lining (14) to or from the lining support (12) by means of this device (20).

Abstract: Connecting element for panels (11, 12) comprising a flange (19) having a presser (19?) at a first end, a first longitudinal seat (20a) for receiving and engaging an extension (13) of a first panel (11) in an intermediate portion, and a enlarged base (28) at a second end, said first longitudinal seat (20a) being open in an area adjacent to said flange and delimited, besides by said flange (19) also by a first lateral wall (22) opposite to said flange (19) and by a first base wall (25) for connecting said first lateral wall (22) with said flange (19), said enlarged base (28) defining with a first projection (29), which extends from a first end thereof towards said first base wall (25), a first longitudinal channel (20b) delimited by said flange (19), said first base wall (25), said enlarged base (28) and said first projection (29), wherein said first base wall (25) extends in the direction orthogonal to said flange (19) at least over a section equivalent to the distance between said flange (19) and said first p

Abstract: The invention relates to dismantlable scaffolding comprising accessible platforms on a plurality of levels and a multitude of vertical supports carrying said platforms. Said vertical supports preferably consist of several sections which can be fixed one on top of the other, are arranged at a distance from each other, and are preferably connected by means of platform bars at predetermined vertical distances. Said supports carry perforated anchor plates at predetermined vertical distances. Connecting railing elements can be applied to adjacent vertical supports. In order to apply at least one railing element above a platform, at least the highest railing elements of a level can be applied to the associated perforated anchor plate by means of a railing adapter element. When applied to the perforated anchor plate, said adapter carries a railing holding element above the anchor plate.

Abstract: An improved scaffold connection is provided, attachable to a vertical scaffold member having a plurality of ring members. The scaffold joint has an upper side and a lower side, and an upper hook section and a lower hook section engagable with the ring members on the vertical scaffold members. The invention includes two latches to lock the joint to two ring members, where the two latches are mechanically connected.

Abstract: The invention relates to a method for fastening an element of airplane interior equipment to a supporting structure in an airplane, comprising the steps of connecting the element of the airplane interior equipment to a first fixing device by using a first locking device, pivoting the element of the airplane interior equipment relative to the supporting structure, and connecting the element of the airplane interior equipment to a second fixing device by using a second locking device. Thus the element of the airplane interior equipment is fastened relative to the supporting structure.

Abstract: An architecture is presented that consolidates scaffold stair units to one unit with a multi-fit hook device. The multi-fit hook device for scaffolding comprises a bracket with an opening at one end. The bracket further comprises slotted holes formed in the bracket, outside the opening to aid in securing the multi-fit hook device to an access way. Hardware, such as screws or bolts, is inserted through the slotted holes to secure the bracket to the access way. The opening at one end of the bracket is formed to accept scaffold tubing indeterminate of size, and can be used on any scaffold system. Thus, the opening is not scaffold tube style specific and does not require a separate unit for each scaffold system. Instead, the multi-fit hook device permits the same access way to be used on multiple scaffold systems.

Abstract: A locking device, spring loaded, for use for holding scaffolding trusses and their walk board secured to the end frames for the scaffold assembly, a locking device incorporating a pin for locking the scaffolding sleeve to its associated end frame, the pin having integrally formed a closed handle at its inward end, opposite from where the pin locks into the end frame, and there being a slot for accommodating a detent pin or the locking device that prevents its inadvertent disengagement while the scaffold assembly is being used or moved.

Abstract: The invention relates to a prop (32.1, 32.3) for a three-dimensional framework, particularly a scaffold (20), comprising a fastening mechanism (38) for attaching a railing device (28) to the prop (32.1, 32.3). The invention also relates to a connecting assembly for a railing device (28), comprising at least one prop (32.1, 32.3) for a three-dimensional framework, especially a scaffold (20), and a railing device (28) which can be attached to the prop (32.1, 32.3) with the help of a fastening mechanism (38). Also disclosed is a method for attaching a railing device (28) to a prop (32.1, 32.3) for a three-dimensional framework, especially a scaffold (20), with the help of a fastening mechanism (38). The fastening mechanism (38) encompasses a locking element which can be swiveled about a swivel pin. In the locked position, the locking surface of the locking element lies across from a bearing surface (43) of a support element that is mounted on the prop (32.1, 32.3).

Abstract: A do-it-yourself wind power generation wall includes a plurality of wind power generation modules, each having a bushing, a wind power generation unit and a connecting rod. The exterior of the bushing forms a plurality of insert portions, and the wind power generation unit includes an electric generator connected to the bushing, and a vane wheel connected to the electric generator and formed on a side of the bushing, and an end of the connecting rod is sheathed onto an insert portion of the bushing, and each wind power generation module is connected to form a power generation wall. The invention allows users to freely install the power generation wall according to the environment of the application and greatly enhances the site and scope of using the power generation wall.

Abstract: A structural post arrangement and cooperating clamp assembly positioning and supporting related furniture components, such as beams. The clamping assembly includes a split clamping collar which surrounds the post and defines upper and lower rims for engagement with top and bottom jaws as coupled to a furniture component.

Abstract: Arrangements are for use with interconnected conveyor sections, such as push beams, commonly found in mining applications. In one embodiment a mechanism includes an elongated dog-bone shaped coupler having a first and second end for insertion between the conveyor sections. A first end of the coupler is secured to a first conveyor section, while a second end of the coupler is received in a recess formed in a second conveyor section. A pivotally mounted cam includes a recess for mating with the upwardly projecting, flared portion of the second end of the coupler. The cam pivots automatically upon being engaged by a free end of the coupler to allow it to pass and then pivots to capture it in place, thereby simply establishing a secure manner of connection. In another, the ends of the conveyor sections are specially adapted to form an articulating joint.

Abstract: An improved scaffold connection for engagement of scaffold members to support members. The connection employs a ring member engaged to the vertical scaffold member. A rotatable latch member engages a lower surface of the ring member to maintain a hook or support portion of a latch body on the upper surface of the ring member. A locking member rotationally engaged to the latch member, is gravity activated to rotate and engage the latch body to hold the latch member engaged to the ring member.

Abstract: A suspension connection means that allows fast disconnection includes a connecting base and a connecting portion; the connection base is connected to a cantilever; and the connecting portion is connected to a back of a screen; two sliders on the connecting portion are placed in a slide; a locking plate from the connecting portion slides into a channel on the connecting base; and the screen connected to the connecting portion is removed from the cantilever by pushing a press portion to clear the locking plate out of the channel for removing the connecting portion.

Abstract: A locking device, spring loaded, for use for holding scaffolding trusses and their walk board secured to the end frames for the scaffold assembly, a locking device incorporating a pin for locking the scaffolding sleeve to its associated end frame, the pin having integrally formed a closed handle at its inward end, opposite from where the pin locks into the end frame, and there being a slot for accommodating a detent pin or the locking device that prevents its inadvertent disengagement while the scaffold assembly is being used or moved.

Abstract: A reinforcing bar comprises a shaft extending along a portion of the length of the bar and a termination extending along an end portion of the bar. The termination incorporating an engagement face incorporating locking formations thereon arranged to interfit with a complementary shaped termination to form an interlock operative to accommodate axial loading.

Abstract: A fitting for transverse joining of two L-shaped sections is provided, each L-shaped section with a web part and a foot part. The sections are disposed with the web part back-to-back, being peculiar in that the fitting substantially includes a first flange and a second flange which are J-shaped and which in mutual contact are slidingly connected with a connection for constituting a largely C-shaped fitting with a gap of variable length for accommodating the two foot parts of the L-shaped sections. The fitting includes means for mutual fixation of the two flanges for retaining the length of the C-shaped fitting after receiving both foot parts in the C-shaped fitting.

Abstract: A universal snapping connector includes two fixed members each provided with a hollow extension having a guide slot, two movable members each pivotally connected with a respective fixed member and each provided with a protrusion having a locking hole that is movable to align with the guide slot of the respective fixed member, and two elastic plates each movably mounted in the guide slot and each inserted into and locked in the locking hole of a respective movable member. Thus, a user only needs to push each of the elastic plates to lock each of the movable members onto each of the fixed members so that the universal snapping connector is locked easily and quickly.

Abstract: A connecting construction for components of a system frame, having frameworks which have frame struts (12) and cross brackets (14) connecting the frame struts (12), a sheet steel corner plate (20) which is arranged in each case in the region in which the cross bracket (14) is connected to the frame strut (12) and which has a corner recess (22) in the corner region of the region in which the cross bracket (14) is connected to the frame strut (12), by means of which a coupling unit can be connected to the frame strut (12), is distinguished in that a further recess (24) is provided approximately level with the corner recess (22) and offset inward, and a further coupling unit having a first coupling element and a second coupling element is provided, it being possible for a frame tube to be connected to the first coupling element, and the second coupling element being designed in such a manner that it can be fastened in the further recess (24) of the sheet steel corner plate (20) with a positive and/or non-positiv

Abstract: A connector apparatus includes first and second mating connectors that can be joined to make a fluid connection. The connectors are constructed to discriminate improper connectors so that no fluid tight connection can be formed with improper connectors. The connector apparatus can be used with a system for compression therapy to prevent deep vein thrombosis.

Abstract: A replaceable locking and securing device for securing a first member to a second member includes a replaceable bracket, a lock and a fastener. The bracket defines one opening when the bracket is operatively connected to the first member.

Abstract: The scaffold has demountable elements which can be connected to one another to make up lateral frames that incorporate vertical members, flooring platforms or planks, diagonal bracing bars, and handrail poles, and is characterized in that the said lateral frames are composed of an inverted L-shaped element and a straight pole which is connected, by a quick coupling without clearance, to the horizontal arm of the L, and is optionally complemented by further poles to make up the lateral frames, both the straight pole and the vertical or longer arm of the inverted L-shaped element being provided with quick couplings with swinging clamping pieces which are intended to receive the flattened ends of reinforcing tie rods and safety-rail poles.