Abstract: An assembled ladder includes two supporting leg assemblies, at least one rung and a bridging part, wherein each supporting leg assembly of the two supporting leg assemblies includes a front supporting leg and a rear supporting leg rotatably connected to the front supporting leg, and the at least one rung and the bridging part are detachably connected between the two supporting leg assemblies. During logistics transportation, the at least one rung is detached from the two supporting leg assemblies, the bridging part is also detached from the two supporting leg assemblies, and the two supporting leg assemblies are stacked. In use, two ends of the bridging part are fixedly connected to the two supporting leg assemblies, and two ends of the at least one rung are also fixedly connected to the two supporting leg assemblies.

Abstract: A ladder platform system for attachment to an extension ladder is provided. The system includes a ladder platform assembly having a first tubular leg, a second tubular leg, a platform, and a tubular board support sleeve. The first tubular leg defines a first interior space that is sized and shaped to receive a top portion of a first ladder side rail therein. The second tubular leg defines a second interior space that is sized and shaped to receive a top portion of the second ladder side rail therein. The tubular board support sleeve is coupled to a bottom surface of the platform and is sized and shaped to receive a board therethrough. The system includes a first standoff member sized and shaped to receive the board therethrough, and a second standoff member sized and shaped to receive the board therethrough.

Abstract: The invention presented is a ladder blocking device attached to a ladder to prevent unauthorized use of the ladder. In one embodiment, the device includes a plurality of prongs that extends from a support system that holds the device onto the ladder. In one alternate embodiment, a shield rests over and is supported by the prongs. In second alternate embodiment, the shield is attached directly to the support system without the presence of the prongs.

Abstract: A ladder safety stabilizer is a telescopically adjustable device that attaches to the rung of a ladder on one end and to the building that the ladder is leaning against at the other end to prevent the feet of the ladder from sliding while a user is climbing, and to provide a second stabilization point in addition to the feet of the ladder to provide greater ladder stability, increased safety, and reduced accident risk.

Abstract: A ladder step attachment. The ladder step attachment includes a base having a pair of arms extending away from an upper surface thereof. The pair of arms extend at an angle such that a distal end of the pair of arms is closer to a rear side of the base than to a front side of the base. A fastener is located on the distal end, wherein the fastener can removably secure to a rung of a ladder. The base further includes a cutout along the front side, wherein a platform is secured to the base at a lateral side of the cutout via a hinge. The platform can move between an open position and a closed position, wherein the platform is coplanar with the base when in the closed position.

Abstract: A ceiling ladder having a plurality of sections that can be climbed by a user when in an unfolded position into an attic and that can be folded together into a retracted position to be stored above the ceiling. The ladder has a deep step, which has a width greater than the width of other steps of the ladder, in which is located between about 2-5 feet from the floor when the ladder is in the unfolded position so user can stand on the deep step in place objects into the attic without having to climb into the attic. A deep step for a ceiling ladder.

Abstract: A scaffolding system is defined by a first primary platform connected to a first cantilevered ladder, a second primary platform connected to a second cantilevered ladder, and a work platform extending between and connected to the first and second primary platforms.

Abstract: A ladder foot support apparatus for creating a larger area to support a user's feet includes a base having a base outer side with a pair of parallel slots extending from a base top side through a base bottom side. The pair of slots is configured to receive a rail of a ladder. An upper face of a platform is coupled to the base bottom side and perpendicularly extends away from a base inner side. A lip is coupled to the platform and has a perpendicular portion extending down from a back edge and a return portion curving back up towards a lower face of the platform. The return portion is configured to selectively receive a rung bottom edge of a rung of the ladder.

Abstract: A removably attachable platform device for use with a ladder includes a base plate, a coupler, and a pair of fasteners. The coupler is coupled to a lower face of the base plate and is configured to removably couple to a respective rung of a ladder to couple the base plate to the rung. Each fastener is coupled to a respective opposing side edge of the base plate and is configured to removably couple to a respective siderail of the ladder to couple the base plate to the siderails of the ladder. The base plate is positioned substantially parallel to a substantially horizontal surface, upon which the ladder is positioned, and thus is configured to support a user.

Abstract: A portable step platform fits onto the hollow rungs of an extension or step ladder, providing support, security and comfort for the user performing work related tasks on the ladder. A user can easily move the device up or down on the ladder, or swing the platform out of the way when ascending or descending. Tilt adjustment is facilitated for the foot platform, to accommodate different ladder inclinations. In addition, the portable step platform is configured to allow support of a scaffold plank on the top surface.

Abstract: A ladder attachment that secures a container to a ladder while keeping the ladder rungs free from obstruction, allowing the user to safely climb the ladder while the ladder attachment is in use. The ladder attachment comprises a rigid supporting arm and a container holder that is capable of securing a container to the ladder via the container's handle. In embodiments, the rigid supporting arm is configured to fit within the hollow rung of a ladder and rest gravitationally therein. Embodiments allow for easy installation and removal of the ladder attachment and may be inserted into either the left or right-hand side of the ladder.

Abstract: A stair tower for a drilling rig is disclosed, the stair tower including a frame, one or more stair flights and platforms positioned within and mechanically coupled to the frame, and a cable tray pivotably coupled to the frame.

Abstract: A ceiling ladder having a plurality of sections that can be climbed by a user when in an unfolded position into an attic and that can be folded together into a retracted position to be stored above the ceiling. The ladder has a deep step, which has a width greater than the width of other steps of the ladder, in which is located between about 2-5 feet from the floor when the ladder is in the unfolded position so user can stand on the deep step in place objects into the attic without having to climb into the attic. A method. A deep step.

Abstract: Step adapters for a rung ladder to provide increased support surface or area is described. In one embodiment, the step adapter includes brace, platform, lock and safety bar sections. The lock, safety bar and platform sections structurally engage a rung of a ladder, and the brace section supports the adapter against rails of a ladder so that the step adapter provides an extended step structure to ease standing on the ladder. In another embodiment, the step adapter includes brace, platform and lock sections, where the platform section side edges are configured to lock the step adapter in place on a rung of a ladder. A tray overlay can be used in combination with the step adapter (which serves as support) to provide an area for holding work-related items. The step adapter can also include a securing element as an additional safety feature to anchor the adapter to a ladder.

Abstract: Step adapters for a rung ladder to provide an increased support surface or area is described. In one embodiment, the step adapter includes a brace, a platform, a lock and a safety bar. The lock, safety bar and platform are provided to structurally engage or embrace a rung of a ladder, and the brace supports the adapter against the rails of a ladder so that in total the step adapter provides an extended step structure to ease standing on the ladder, especially for an extended period of time. In another embodiment, the step adapter includes brace, platform and lock sections, where the platform section side edges are configured to lock the step adapter in place on a rung of a ladder. A tray overlay is also described which when used in combination with the step adapter (which serves as a support) provides a service area for holding work-related items.

Abstract: An enhanced apparatus system and method may be used to facilitate the construction of a processing tank such as an anaerobic digester. The kit may include a cover assembly that can be assembled to form a cover for the processing tank, a side wall assembly that can be assembled to form a side wall for the processing tank, and a plurality of ballast support assemblies. Each ballast support assembly may have a retracted configuration in which the ballast support assembly avoids significantly impeding vertical motion of the ballast block from an initial ballast location to a final ballast location, and a deployed configuration in which the ballast block can be supported by the ballast support assembly in the final ballast location.

Abstract: A portable ladder platform attachment, for increasing a person's safety when standing on a ladder, includes a platform having a surface, a forward edge, a rear edge, and opposing side edges, and a rod having a serpentine shape confined within a vertical plane above a centerline extending between the forward and rear edges of the platform. The rod has a first end coupled to the platform closer to the forward edge than to the rear edge, a midsection that extends above and substantially parallel to the surface of the platform along the centerline, and a second end shaped as a hook sized to fit closely about an upper rung of the ladder while the platform sits on a lower rung of the ladder.

Abstract: The problem of traversing the offset area between the fly section and the base section of an extension ladder is solved by a step adaptor of the subject invention. A step adaptor can have two or more steps which can be progressively narrower in depth. The step adaptor can be placed on the first available rung just below the fly section. The progressively narrower depth of the steps of a step adaptor create a transition zone in the offset area that reduces the abrupt change in distance between the rungs in the fly section and the rungs in the base section.

Abstract: A ladder accessory device for insertion into an opening in a prior art ladder rung, wherein the ladder accessory device provides an elevated work environment that is out of the path of an individual ascending/descending the ladder. The accessory device is preferably comprised of a rung insert, a rung insert locking device, a support arm, a platform arm, and a platform arm locking device. The rung insert locking device permits the support arm to be rotated about the rung insert locking device, and the platform arm is likewise rotatable about the support arm. A wide arrange of accessories may also be removably attached to the platform to increase the overall usefulness of the device.

Abstract: A wheel loader is provided with a cab, a ladder, a vehicle body cover, an engine, an air cleaner, and an expansion member. The ladder has first to third steps. The air cleaner is disposed to the outside of the vehicle body cover and above and to the rear of the ladder. The expansion member is able to assume an expanded posture and a retracted posture. The expansion member abuts at least one step in the expanded posture.

Abstract: The present invention features a ladder shelf system for adding a generally planar rectangular shelf close to the top of a step ladder. The system has the generally planar rectangular shelf that is rigid with a step engagement member located on a shelf top surface. The step engagement member is adapted to fit inside an interior cavity of a top step of a step ladder. The system has a generally planar rectangular non-slip pad centrally located on the shelf top surface. The system has a locking lever located close to the shelf posterior end. In a first unlocked position, a first clamping member and a second clamping member lie on a plane perpendicular to the shelf top surface. In a second locked position, the first clamping member and the second clamping member lie on a plane parallel with the shelf top surface.

Abstract: A tree-mountable hunting stand having a support frame for attachment to a tree and including a horizontal support member, a hanger plate for suspended engagement with the horizontal support member, and a dual axis pivoting seat assembly attached to the hanger plate and including a saddle for supporting a hunter. The saddle includes a seat surface and a pommel extending upwardly from the seat surface. While the support frame is attached to a tree, the hanger plate can be selectively attached to and removed from the support frame to locate the dual axis pivoting seat assembly at a selected height along the support frame.

Abstract: A platform assembly includes a ladder that comprises a plurality of steps coupled to and extending between a pair of legs. A platform is provided that may be coupled to a selected one of the steps.

Abstract: A ladder step attachment made of a single, unitary piece of extruded aluminum having no moving parts. The attachment has a horizontal standing surface improved with a gripping surface, the standing surface having two notches for engaging the rails of a ladder and extending partially between the ladder rails. A lip connected to the standing surface presents a resilient member to abut the back side of the rung. A substantially tube-shaped support has a tube wall. One part of the tube wall shares a portion of the standing surface and another part of the tube wall engages the ladder's rails. A bend at the top of the rail engaging tube wall separates that portion of the tube wall from a substantially vertical portion of tube wall above the bend to facilitate removal.

Abstract: A step for use in association with a tree stand ladder. The step includes a frame that includes a plurality of elongated members that are formed into a rectangular or square form; a first pair of said elongated members extending substantially in parallel with each other and each having extending free ends; two holding pieces secured at the end of respective free ends of the pair elongated members; a planar platform secured within the frame to enable a person to stand on the platform and a pair side braces that extend from respective elongated members to respective ladder rails to provide support for said frame and planar platform.

Abstract: A platform for an extension ladder comprises a plate member adapted to engage a pair of rails on each of a first stage and a second stage of the extension ladder and become wedged therebetween and to remain parallel to the ground when the plate member rests on a rung of the extension ladder. The plate member has at least six sides, a bottom cutout, a middle cutout and a top cutout; each cutout oppositely disposed on at least six sides; and each cutout relating to various positions along a length of the extension ladder.

Abstract: The invention relates to scaffold steps, with two separate side pieces (11) and a plurality of separate step elements (13, 13?, 13?), which can be detachably coupled to each other and to the side pieces.

Abstract: The present disclosure relates to platforms for ladders. More particularly, the present disclosure relates to a platform configured to be coupled to rungs of the ladder.

Abstract: A step stool kit includes a base unit and a step unit. The step unit rests on the base unit and includes an upper step. The base unit includes a lower step.

Abstract: A mast in a conventional stacker crane is configured to extend in a vertical direction. Accordingly, the mast is not sufficiently rigid, and may swing in a running direction during running or when the running operation is stopped. An attempt to increase the rigidity results in a thicker mast, thus increasing the size of the stacker crane. In order to solve this problem, a mast is extended vertically from a lower frame and a platform that elevates and lowers along the mast wherein a ladder is extended vertically at a position opposite to the mast across the platform in a direction in which the lower frame runs, and a top of the mast and a top of the ladder is connected together via an upper frame.

Abstract: A ladder step platform can be mounted on any ladder having hollow rungs extending between ladder rails. This ladder step platform is especially intended for use with conventional extension ladders. The ladder step platform includes a tread or step plate extending between opposite side plates. The spacing between side plates can be adjusted so the ladder step platform will fit ladders of different width. A support rod insertable though hollow ladder rungs pivotally supports the ladder step platform with the side plates positioned on the outside of the ladder rails. A lower adjustable rod abuts the ladder rails to hold the tread or step plate in a horizontal orientation extending beyond the sloping ladder for easy access.

Abstract: A unitary step unit has a generally rectangular main body portion with opposed transverse ends and laterally opposed sides. One end is bent downward and angularly outward with respect to the main body portion and terminates in a short upturned lip that extends angularly upward and inward. The step unit is removably installed on the existing step of a conventional ladder having channel-shaped steps by engaging the upturned lip against the bottom edge of the down-turned longitudinal side of the step and then pivoting the unit downwardly such that the upturned lip of the unit is captured on the bottom edge of the down-turned longitudinal side of the step and its main body portion is supported on top of the step and extends a distance rearwardly beyond the width of the step in cantilever fashion to provide a relatively wide flat foot-supporting surface.

Abstract: A personal stand incorporating a ladder, a user supporting platform and a load sensitive pliant suspender that is easily adapted for use with an extension ladder. The personal stand improves the user's footing as well as the user's comfort. Pliancy of the suspender allows the user to move the platform, without requiring the user to dismount the ladder. When sufficient load is applied to the platform, the pliant suspender is transiently transformed into a rigid suspender yoking an upper rung of the ladder.

Abstract: A step and platform for use with a ladder which will allow a user to climb the ladder, using the ladder rungs, and, upon reaching a desired height at which the unit has been placed, swing the same into platform position. When in aligned position with the other rungs and stiles of the ladder, the rung thereof is available for normal climbing use and after ascending, the user may release the unit from aligned position to its support position and stand or place articles thereon.

Abstract: A suspendible container for holding items that is capable of being attached to holes on a horizontal surface. The container is particularly adaptable to being attached to the top cap of a ladder. The container includes at least one prong which attaches to the container and is removably insertable into a hole in the horizontal surface. The container is particularly suited for holding items such as tools and paint cans that would be needed by the user of a ladder.

Abstract: A ladder tool holder for holding hand tools and paint cans on an extension ladder having hollow rungs. The holder comprises a custom metal extrusion that is registerable within a selected ladder rung. Multiple tool engagement and holding attachments are adjustably keyed into the portion of the extrusion extending from the registration ladder rung.

Abstract: A stepladder organizing assembly for increasing a surface area of a head step of a stepladder includes a base portion with a top surface and a bottom surface. A peripheral shoulder is integral to and extends away from each of a plurality of sides. A lip is integral to and extends away from an edge of the shoulder in a direction opposite of the top surface. The shoulder has a plurality of channels therethrough. Straps removably secure the base portion to the head step. At least one tray extension, comprising a block, extends a surface area of the head step. The block has a top wall, a bottom wall, a first side wall and a second side wall. A flange extends away from the first wall. A plurality of protruding members extends away from the flange. The protruding members may be removably placed in the channels.

Abstract: An accessory for installation on a ladder having hollow rungs comprises a holding arm which is shaped to fit within a hollow rung of a ladder. The accessory includes a ratchet assembly mounted within one end of the holding arm. A paint supply holding assembly includes a shaft having an engagement member for engaging the ratchet assembly. As the shaft is rotated in the ratchet assembly, the holding assembly is incrementally pivoted about an axis defined by the shaft. An elongate shaft of a second holding assembly may be inserted into the holding arm from the end opposite the ratchet assembly. The elongate shaft is slidably receivable into an open end of the shaft of the first holding assembly such that a rotation of either shaft causes a simultaneous pivotal movement of both the first and second holding assemblies.

Abstract: While a crawler body 110 is traveling, infrared sensors 144 and an elevational difference calculator 132 incorporated in a controller 130 detects the magnitude of a step present ahead of the crawler body 110. A safety speed calculator 134 calculates a safety speed based on the magnitude of the step detected and on the position of the platform 116 relative to the crawler body 110, which position is detected by various detectors 141˜143 and by a position calculator 133. A comparator 135 compares this safety speed with the traveling speed of the crawler body 110, and if the current speed of the crawler body 110 is greater than the safety speed, then the comparator 135 outputs a warning signal. Upon receiving this signal, a restrictor 136 controls a valve controller 131 to reduce the speed of the crawler body 110 such that the crawler body 110 can travel over the step safely.

Abstract: A member for connecting a rail to a horizontal element of a ladder. The member comprises a first portion that connects to the horizontal member. The member also comprises a second portion which connects to the rail and extends essentially in parallel with the rail. The second portion is integrally connected to the first portion such that the first portion and the second portion are one continuous piece. The second portion is in an angular relationship of less than 90.degree. with the first portion. A member for connecting a rail having a first rail flange and a second rail flange to a horizontal element of a ladder. The member comprises a first arm which connects to the first rail flange and the horizontal member. The member is also comprised of a second arm which connects to the second rail flange and the horizontal member. Additionally, the member comprises a central body which is integrally connected to the second arm and the first arm.

Abstract: A safety platform foldable structure for a ladder for a worker to stand on. The platform structure has a platform flooring in the shape of the letter H which is removably mountable to one rung of an upstanding ladder to an open horizontal or vertical closed position. Spaced apart hook mechanisms extending from the flooring, are releasably secured to the rung to assist holding the platform in the horizontal position and to hold the platform in the vertical closed position. Downwardly extending front side walls from the flooring engage rails on the ladder to secure the platform in the horizontal position.

Abstract: An adjustably positionable support platform for use in combination with an extension ladder which includes a generally planar deck having a load supporting assembly to accommodate a person standing thereon. The load bearing assembly comprises a plate with a foot supporting upper surface and a ladder rung engaging lower surface. A first pair of support pins is provided for slidable engagement within brackets attached to the lower rung engaging surface, the first pair of pins being arranged to capture a ladder rung between the pin and the lower rung engaging surface. A second pair of pins is provided with a distally positioned ladder rail engaging plate to control the angular disposition of the deck so as to provide a horizontal standing surface for the user. Additionally, the plate of the load bearing assembly is provided with angularly downwardly extending flanges, with the included angle between the front flange and the plate preferably being about 75 degrees.

Abstract: The present invention comprises a platform for an aluminum extension ladder which platform is adjustable upwardly and downwardly, and is pivotable between a pair of side frames, to permit a user's foot a comfortable support, in addition to the ladder rung to which it is attached.

Abstract: A scaffold table for sheet rock finishers includes a horizontal planar base with subtending walls and a spaced apart U-shaped border wall that together define a U-shaped elongate slot sized to cradle wide-bladed masonry tools therein. The table includes a pair of pivotally mounted adjustable length legs having channels on one end to rest against a horizontal scaffold bar. The forward portion of the table includes an elongate hook member to fit over a higher scaffold bar for removably attaching a table thereto. The table base is reinforced from below and includes at least one vertical hole therethrough for cradling of a nail gun or similar power tool.

Abstract: A ladder extension member is arranged for securement to an associated ladder step of an associated ladder, wherein the organization is dismounted relative to the ladder step for resecurement thereto to provide an extension step. The extension step includes a plurality of "J" shaped support members mounting a planar support web fixedly therebetween, wherein the spaced "J" shaped support members permit capturing of an associated ladder step between the support web and a cavity defined by the "J" shaped support members. A plurality of spaced bottom plates are arranged with slots to effect selective capturing of the associated ladder step therewithin, or reciprocatable to a rear position to permit removal of the organization relative to the ladder step for reorientation of the ladder step thereto.

Abstract: A pipe step for providing a flat supporting surface on the top side of a horizontal pipe. The step includes a pair of channel members each having arcs cut in the flange portions thereof to meet with the pipe. U-bolts are provided for clamping the channel members to the pipe. A flat-supporting surface form from square mesh grating is bolted to and extends between the upper web portions of the channel members and provides a non-slip flat supporting surface.

Abstract: A ladder adaptable platform for attachment to a typical extension ladder which has a pair of parallel side rails and spaced rungs. The ladder adaptable platform has a platform surface which is engageable at the backside of a desired rung, the platform surface having side frames which each articulably support rail engaging channels. The ladder adaptable platform may be moved up or down the ladder by lifting the platform from engagement with its rung, sliding the channels up or down the ladder rails to a new desired rung to which the platform surface may be engaged.

Abstract: A work shelf for removable installation and use on a stepladder to provide an enlarged, sturdy area for holding tools and material. The work shelf includes a platform area of a width greater than the distance between the ladder rear legs, a neck extending from one edge of the platform area and having a width less than the distance between the ladder rear legs, and a brace extending from the neck and having a width less than the distance between the ladder front legs. A retaining edge extends up from the platform area. In use, the platform area overlies and is supported on the stepladder shelf, while the neck extends between the ladder rear legs, and the brace is positioned between the ladder front legs and beneath one of the ladder steps. A clamp is movably fastened to the neck. With the work shelf in position on a stepladder the clamp is secured in a position abutting the ladder rear legs.

Abstract: A stepladder platform which can be installed onto the steps of a stepladder to provide an enlarged standing area. A restraining means at the rear engages the stepladder step to prevent forward movement and tilting. A restraining means at the front prevents rearward movement. Also a latch device can be used to prevent tilting from the front. The platform is constructed to support the weight of a person standing on it.

Abstract: This invention relates to devices which adapt to and attach to ladders and step ladders to enhance the balance and stability of the user and to provide support for equipment, tools and supplies. Supporting means comprising a wide foot plate and supporting means comprising a rigid shaft utensil support constitute the basic elements of the invention. The foot plate support enhances the stability, balance and comfort of the user thereby permitting the user to work for longer periods of time and freeing the users' hands.The rigid shaft utensil support is inserted through the rung of a ladder to support tools, equipment, supplies, etc., which may be placed thereon or suspended therefrom.