Abstract: A safety ladder for a pool includes a movable ladder portion that can be moved between an accessible position and an inaccessible position. The movable ladder portion is disposed substantially outside of the pool and provides a series of steps that can be climbed vertically for entry into the pool when it is located in the accessible position. In the inaccessible position, the movable ladder portion is moved such that the steps can no longer be climbed and access to the pool is prevented. Such safety ladder assemblies are provided primarily to prevent children and other at risk individuals from entering an unattended pool. A dampening member is provided such that the force necessary to move the movable ladder portion is regulated to prevent a dangerous accumulation of moment and limit a risk of injury through harmful contact therewith.

Abstract: A folding locking mechanism used for a step stool is disclosed. The step stool includes a stool plate, stool legs rotatably arranged on the stool plate and a locking mechanism used for locking the stool legs. The locking mechanism includes a first connecting piece and a pin, wherein the first connecting piece is fixedly connected with the stool plate and is provided with a limiting hole allowing the pin to fall therein, and the pin is limited in the radial direction and is movable in the axial direction, relative to the stool legs.

Abstract: A telescoping tower for a boat may include a center section of a tower. The apparatus may further include at least a first support and a second support each comprising a telescoping assembly, wherein the telescoping assembly may include two or more members longitudinally moveable relative to one another for moving the center section of the tower between at least a first position and a second position.

Abstract: A tool use system has a tool having sensors tracking use of the tool, a first CPU executing first coded instructions monitoring input from the sensors with respect to time; and first wireless communication circuitry adapted to transmit data, and a central hub comprising a second CPU executing second coded instructions, a data repository, and second wireless communication circuitry compatible with the first wireless communication circuitry. The first coded instructions comprise an algorithm adapted to identify an instance of unsafe use of the tool based on sensory input and time, and wherein an identified instance of unsafe use is transmitted by the first wireless communication circuitry to the second wireless communication circuitry, and the second coded instructions cause the instance of unsafe use to be recorded in the data repository.

Abstract: An electronically-enhanced climbing structure has a first lower and a second higher horizontal surface provided at different heights above ground level to support weight of a user, enabling the user to attain a working position above ground level, electronic circuitry comprising a microprocessor mounted to the climbing structure, a first pressure sensor on the first, lower horizontal surface, coupled to the electronic circuitry, a second pressure sensor on the second, higher horizontal surface, also coupled to the electronic circuitry, and an alert output mechanism. The electronic circuitry receives signals from the first and the second pressure sensors at different times, processes the signals to determine safe use of the climbing structure, and, in an event of unsafe use, triggers the alert output mechanism to issue an alert of unsafe use.

Abstract: The ladder convertible to a scaffold is a self-standing ladder that is able to convert into a scaffold. The self-standing ladder is constructed of two ladder members that are able to attach to and pivot with respect to one another via a removable cap. The two ladder members also attach to one another via a foldable platform, which provides support when the two ladder members are pivoted away from one another in a self-standing configuration. The two ladder members may be disconnected to one another, and held in parallel arrangement with respect to one another via the foldable platform. The foldable platform is able to span a scaffold length between the two ladder members in order to form a scaffold. A pair of guar members attach to the two ladder members to provide guide rails on opposing sides of the scaffold.

Abstract: A structural arrangement for securing scaffolding to a building wall. The structural arrangement includes the building wall with a recess, a façade anchor secured to the building wall and having a receptacle for accommodating at least one securing element. The securing element engages in the receptacle in the façade anchor on the one hand and in the recess in the wall on the other hand. The façade anchor provides a supporting face facing the building wall. A compensating material is provided between the supporting face and the building wall in such a manner that the façade anchor makes contact over its supporting face with, and is supported by the building wall indirectly via, the compensating material.

Abstract: The modular folding table includes a collapsible truss framework that supports a folding table top and a folding utility shelf, and includes legs that can be connected horizontally or vertically to the legs of one or more similar modular folding tables, to provide desired table and shelf space with a structure that is foldable, strong and stable.

Abstract: Embodiments of the present invention are generally related to a multi-sided ladder assembly and methods of utilizing the same. More specifically, embodiments of the present invention relate to a multi-sided ladder assembly with substantially improved stability, providing for a wide range of applications. In one embodiment of the present invention, a multi-faced ladder assembly comprises: a plurality of individual ladders, a top platform positioned over a top of each of the plurality of ladders, and a plurality of support platforms, each support platform positioned at a bottom end of each of the individual ladders.

Abstract: The present disclosure provides a swimming pool ladder with a barrier. The ladder includes two ladder sections. A top platform for supporting is connected between the upper portions of the two ladder sections and disposed above the swimming pool. The two ladder sections are respectively positioned inside and outside the swimming pool. The ladder section includes two parallel-disposed rails and a plurality of steps. The plurality of steps are mounted at intervals along the two rails from top to bottom. A barrier is provided that is perpendicular to the inner side face of the first ladder section. The barrier has a triangle shape, one edge of which is adjacent the inner side face of the first ladder section and fixed on at least two steps through at least two connectors and another edge is adjacent the inner sidewall of the swimming pool. The top end of the barrier is spaced from the top platform by a distance and the bottom end is adjacent the floor of the swimming pool.

Abstract: A scaffold includes a frame assembly. The scaffold includes planks that are disposed on the frame assembly. The scaffold includes wheels attached to the frame assembly on which the frame assembly rolls. The scaffold includes a project tray which extends from the frame assembly. The scaffold includes a telescoping tube assembly that is mounted to the frame assembly and on which the tray is mounted. A method for using a scaffold. The method includes the steps of placing a telescoping tray assembly at a desired height relative to a frame assembly having planks disposed on it by moving the tray assembly which extends from the frame assembly. There is the step of locking the tray assembly at the desired height to the frame assembly.

Abstract: A dual-use ladder and bridge modular system preferably includes tubes, gussets, flanges, and/or joints. In a preferred embodiment, the tubes, gussets, flanges, and/or joints are made of carbon fiber. A method connects and disconnects modular carbon fiber ladder segments. Another method creates a lightweight carbon-fiber beam with exceptionally high stiffness and strength using a combination of carbon-fiber braid material, uni-directional cloth, and pultruded carbon-fiber strips. A carbon fiber ladder segment and tube connectors are also disclosed.

Abstract: The mobile work platform is a collapsible frame assembly that can support tools, supplies, and workers. The collapsible frame involves two distinct embodiments wherein a first embodiment involves a frame assembly that simply folds flat when not in use, and a second embodiment involves a rotating ladder assembly in conjunction with a frame assembly that can fold flat when not in use. Both embodiments include ladder rungs upon each side to enable climbing upon said device as well as removable scaffolds.

Abstract: A multifunctional ladder for assisting a user to travel along a substantially vertical plane as well as a substantially horizontal plane respectively may include a telescopically adjustable walkway with a planar surface. Additionally, the ladder may include telescopically adjustable and independently detachable support legs connected to the walkway and extending downwardly therefrom. U-shaped brackets may also be affixed to ends of the walkway and a plurality of ladders may be pivotally coupled thereto. The ladders and support legs may maintain the walkway at a substantially stable position and the ladders may freely articulate about fulcrum pivot axes while the support legs and walkway remain at fixed and stationary positions. The walkway preferably has a male and a female member slidably engaged therewith for permitting adjustment of a longitudinal length of the walkway, and U-shaped rails directly coupled thereto for shielding a user from falling off of the walkway.

Abstract: The present disclosure provides a swimming pool ladder with a barrier. The ladder includes two ladder sections. A top platform for supporting is connected between the upper portions of the two ladder sections and disposed above the swimming pool. The two ladder sections are respectively positioned inside and outside the swimming pool. The ladder section includes two parallel-disposed rails and a plurality of steps. The plurality of steps are mounted at intervals along the two rails from top to bottom. A barrier is provided that is perpendicular to the inner side face of the first ladder section. The barrier has a triangle shape, one edge of which is adjacent the inner side face of the first ladder section and fixed on at least two steps through at least two connectors and another edge is adjacent the inner sidewall of the swimming pool. The top end of the barrier is spaced from the top platform by a distance and the bottom end is adjacent the floor of the swimming pool.

Abstract: The present invention is to provide a collapsible platform ladder, which comprises a pair platform decks, a pair ladder frames with telescopic hollow tubes and two pair collapsible floor feet, wherein the pair platform decks are abutted each other in linked way, the pair ladder frames are disposed on both distal outer lateral ends thereof respectively, and each pair pivotal floor feet are disposed at the ends for each ladder frame in pivotal manner respectively.

Abstract: An A-frame ladder has a first ladder and a second ladder. The first ladder has two rails interconnected by a plurality of steps and a first set of grooves that receive a gate/barrier device to inhibit a person from using the first ladder's steps. The second ladder also has two rails interconnected by a plurality of steps and a second set of grooves, interconnected to the first set of grooves, that receive the gate/barrier device so the first ladder and the second ladder can be used and inhibits a person from entering the area between the first ladder and the second ladder through the second ladder's steps.

Abstract: A collapsible working platform including a working platform and a first and a second telescopically collapsible ladder leg, where the first and second legs are hingedly connected to one end of the working platform, each to a separate end of the working platform. Each of the first and second legs includes several ladder sections. Each ladder section is telescopically inserted into a lower ladder section to form a collapsible ladder including at least two ladder sections. The working platform includes two platform parts. The platform parts are hingedly connected to each other at one end and connected to a respective ladder leg at the other end. The two platform parts are foldable so that the platform parts are arranged in parallel when placed in a folded position.

Abstract: A ladder includes a first section having at least one step. The ladder includes a second section having a least one step. The ladder includes a platform attached to the first and second sections. The ladder includes a hinge mechanism connected to the first section and second section, about which the first section and second section move between an open state, where the first and second sections are in an angular relationship for use, and a folded state where the first and second sections and the platform are essentially in parallel, as shown in FIGS. 4 and 5. The ladder includes a foldable tray mechanism attached to the hinge mechanism about which the foldable tray mechanism moves between the open state independently of the first and second sections, where the foldable tray is in an angular relationship with the first and second sections for use, and a folded state where the foldable tray essentially forms a plane with the first section. A hinge for a stepladder. A step to a ladder.

Abstract: A mobile scaffolding (10) for elevating a worker (not shown) above a floor or ground surface (S) is disclosed. The scaffolding (10) broadly includes a pair of frames (12) and (14), a platform (16) supported by the frames (12,14), a pair of casters (18, 20) and (22,24) rollably supporting a respective one of the frames (12,14), and a brake assembly (26, 28,30, and 32) associated with a corresponding one of the casters (18,20,22,24), respectively. The inventive brake assemblies (26,28,30,32) enable the worker supported on the platform (16) to selectively activate and deactivate the respective brake assemblies (26,28,30,32) from the platform (16). This enables the worker supported on the platform (16) to deactivate the brake assemblies (26,28,30,32), reposition the scaffolding (10), and then reactivate the brake assemblies (26,28,30,32) without requiring the worker to dismount from the platform (16).

Abstract: Scaffold having a locking and securing device for securing a first support to a second support is disclosed where the locking and securing device is movable between a secured position and an unsecured position by using a force at a substantially center point of the securing means.

Abstract: A locking and securing device including a securing means which is movable between a secured position and an unsecured position by using a force at a substantially center point of the securing means.

Abstract: Scaffolding (10) having safety features for coupling scaffolding structural members so as to prevent equipment damage and worker injury from inadvertent disassembly, while permitting quick assembly and disassembly when desired. The scaffolding (10) incorporating the safety features broadly comprises legs (12); beams (14); a platform (16); coupling braces (18); platform pins (20); and platform clips (22). The first safety feature is a rounded, spring-biased, rotation-limited G-pin for adjustably coupling the beams (14) with the legs (12). The G-pin's rounded shape and a perpendicularly projecting stop (51) minimize risks of inadvertent removal. The second feature is a lockable pin (44) operable to independently couple structural members (12,14) in the event the G-pin is inadvertently removed. The third and fourth features are platform pins (20) and spring-biased platform clips (22) operable to prevent, respectively, undesirable horizontal and vertical movement of the platform (16).

Abstract: Scaffolding (10) having safety features for coupling scaffolding structural members so as to prevent equipment damage and worker injury from inadvertent disassembly, while permitting quick assembly and disassembly when desired. The scaffolding (10) incorporating the safety features broadly comprises legs (12); beams (14); a platform (16); coupling braces (18); platform pins (20); and platform clips (22). The first safety feature is a rounded, spring-biased, rotation-limited G-pin for adjustably coupling the beams (14) with the legs (12). The G-pin's rounded shape and a perpendicularly projecting stop (51) minimize risks of inadvertent removal. The second feature is a lockable pin (44) operable to independently couple structural members (12,14) in the event the G-pin is inadvertently removed. The third and fourth features are platform pins (20) and spring-biased platform clips (22) operable to prevent, respectively, undesirable horizontal and vertical movement of the platform (16).

Abstract: A swimming pool ladder typically utilized with a large capacity swimming pool for enabling bathers to conveniently enter and exit the pool. In its most fundamental embodiment, the swimming pool ladder includes a first ladder section connected to a second ladder section by a top platform. Each ladder section includes a pair of J-shaped side rails for providing a ladder frame. A plurality of rung anchors are mounted upon each of the side rails for supporting a plurality of rungs. Each of the rung anchors includes a load bearing flange. Further, each of the rungs includes a pair of U-shaped openings and a pair of grooves formed within the U-shaped openings for receiving and cooperating with one of the rung anchors and the corresponding load bearing flange. Finally, a plurality of retainer pins are provided for removably securing the rungs to the rung anchors.

Abstract: A mobile scaffolding (10) for elevating a worker (not shown) above a floor or ground surface (S) is disclosed. The scaffolding (10) broadly includes a pair of frames (12) and (14), a platform (16) supported by the frames (12,14), a pair of casters (18, 20) and (22,24) rollably supporting a respective one of the frames (12,14), and a brake assembly (26, 28,30, and 32) associated with a corresponding one of the casters (18,20,22,24), respectively. The inventive brake assemblies (26,28,30,32) enable the worker supported on the platform (16) to selectively activate and deactivate the respective brake assemblies (26,28,30,32) from the platform (16). This enables the worker supported on the platform (16) to deactivate the brake assemblies (26,28,30,32), reposition the scaffolding (10), and then reactivate the brake assemblies (26,28,30,32) without requiring the worker to dismount from the platform (16).

Abstract: A scaffolding system utilizing upright ladders and commonly available sawhorses. The ladders have frames attached which are adapted for enclosing the horizontal beam of a sawhorse and other similar ground support systems. The frames enclose the sawhorse horizontal beam tautly and maintain the ladder securely and in an upright fashion. Ordinary planking is then set on the rungs of opposing ladders to provide a working platform.

Abstract: A swimming pool ladder typically utilized with a large capacity swimming pool for enabling bathers to conveniently enter and exit the pool. In its most fundamental embodiment, the swimming pool ladder includes a first ladder section connected to a second ladder section by a top platform. Each ladder section includes a pair of J-shaped side rails for providing a ladder frame. A plurality of rung anchors are mounted upon each of the side rails for supporting a plurality of rungs. Each of the rung anchors includes a load bearing flange. Further, each of the rungs includes a pair of U-shaped openings and a pair of grooves formed within the U-shaped openings for receiving and cooperating with one of the rung anchors and the corresponding load bearing flange. Finally, a plurality of retainer pins are provided for removably securing the rungs to the rung anchors.

Abstract: Two ladders are connected together with cross-braces to form a scaffold. Platforms of the scaffold are supported on rungs of the ladders. A C-shaped bracket connects to the ladder legs. The bracket has an ear for connecting a brace.

Abstract: A ladder scaffold support apparatus, ladder stabilizer and ladder scaffolding system is disclosed. The support apparatus generally includes a first bar connected to a second bar at an angle. The bars include planar pads adapted to be affixed to a wall. The apparatus further includes a third bar that is in telescopic arrangement with the first bar. The third bar is adapted to fit through the rung of a ladder. Several brackets can be used to stabilize a ladder against a surface, typically a wall. When one or more ladders are used in conjunction with a platform, the brackets can be used to affix the ladders to a wall. The platform is laid on the rungs of the ladders thereby creating a scaffolding system.

Abstract: Scaffold having a locking and securing device for securing a first support to a second support is disclosed where the locking and securing device is movable between a secured position and an unsecured position by using a force at a substantially center point of the securing means.

Abstract: A locking and securing device including a securing means which is movable between a secured position and an unsecured position by using a force at a substantially center point of the securing means.

Abstract: A ladder scaffold support apparatus, ladder stabilizer and ladder scaffolding system is disclosed. The support apparatus generally includes a first bar connected to a second bar at an angle. The bars include planar pads adapted to be affixed to a wall. The apparatus further includes a third bar that is in telescopic arrangement with the first bar. The third bar is adapted to fit through the rung of a ladder. Several brackets can be used to stabilize a ladder against a surface, typically a wall. When one or more ladders are used in conjunction with a platform, the brackets can be used to affix the ladders to a wall. The platform is laid on the rungs of the ladders thereby creating a scaffolding system.

Abstract: Scaffolding (10) having safety features for coupling scaffolding structural members so as to prevent equipment damage and worker injury from inadvertent disassembly, while permitting quick assembly and disassembly when desired. The scaffolding (10) incorporating the safety features broadly comprises legs (12); beams (14); a platform (16); coupling braces (18); platform pins (20); and platform clips (22). The first safety feature is a rounded, spring-biased, rotation-limited G-pin for adjustably coupling the beams (14) with the legs (12). The G-pin's rounded shape and a perpendicularly projecting stop (51) minimize risks of inadvertent removal. The second feature is a lockable pin (44) operable to independently couple structural members (12,14) in the event the G-pin is inadvertently removed. The third and fourth features are platform pins (20) and spring-biased platform clips (22) operable to prevent, respectively, undesirable horizontal and vertical movement of the platform (16).

Abstract: Scaffolding (10) having safety features for coupling scaffolding structural members so as to prevent equipment damage and worker injury from inadvertent disassembly, while permitting quick assembly and disassembly when desired. The scaffolding (10) incorporating the safety features broadly comprises legs (12); beams (14); a platform (16); coupling braces (18); platform pins (20); and platform clips (22). The first safety feature is a rounded, spring-biased, rotation-limited G-pin for adjustably coupling the beams (14) with the legs (12). The G-pin's rounded shape and a perpendicularly projecting stop (51) minimize risks of inadvertent removal. The second feature is a lockable pin (44) operable to independently couple structural members (12, 14) in the event the G-pin is inadvertently removed. The third and fourth features are platform pins (20) and spring-biased platform clips (22) operable to prevent, respectively, undesirable horizontal and vertical movement of the platform (16).

Abstract: Scaffolding (10) having safety features for coupling scaffolding structural members so as to prevent equipment damage and worker injury from inadvertent disassembly, while permitting quick assembly and disassembly when desired. The scaffolding (10) incorporating the safety features broadly comprises legs (12); beams (14); a platform (16); coupling braces (18); platform pins (20); and platform clips (22). The first safety feature is a rounded, spring-biased, rotation-limited G-pin for adjustably coupling the beams (14) with the legs (12). The G-pin's rounded shape and a perpendicularly projecting stop (51) minimize risks of inadvertent removal. The second feature is a lockable pin (44) operable to independently couple structural members (12,14) in the event the G-pin is inadvertently removed. The third and fourth features are platform pins (20) and spring-biased platform clips (22) operable to prevent, respectively, undesirable horizontal and vertical movement of the platform (16).

Abstract: Scaffolding (10) having safety features for coupling scaffolding structural members so as to prevent equipment damage and worker injury from inadvertent disassembly, while permitting quick assembly and disassembly when desired. The scaffolding (10) incorporating the safety features broadly comprises legs (12); beams (14); a platform (16); coupling braces (18); platform pins (20); and platform clips (22). The first safety feature is a rounded, spring-biased, rotation-limited G-pin for adjustably coupling the beams (14) with the legs (12). The G-pin's rounded shape and a perpendicularly projecting stop (51) minimize risks of inadvertent removal. The second feature is a lockable pin (44) operable to independently couple structural members (12,14) in the event the G-pin is inadvertently removed. The third and fourth features are platform pins (20) and spring-biased platform clips (22) operable to prevent, respectively, undesirable horizontal and vertical movement of the platform (16).

Abstract: Two ladders are connected together with cross-braces to form a scaffold. Platforms of the scaffold are supported on rungs of the ladders. A C-shaped bracket connects to the ladder legs. The bracket has an ear for connecting a brace.

Abstract: A gate hingedly connected to a staircase. The gate hinge is blow-molded integrally with the gate body. A mounting post has on one portion a hinge pin for receiving the gate hinge, and the other portion has a pair of parallel resilient sheets for receiving an edge portion of the staircase. Two staircases are attached back-to-back by vertical flanges each of which is offset from a vertical center plane of the respective back wall portion and has a vertical surface which is co-planar with the vertical center plane. The corners of the staircase are individually height adjustable by internally threaded portions which receive threaded rods. The internal threads are formed as part of the blow-molding process. A hole to the interior of the staircase or other article is formed as part of the blow-molding process.

Abstract: The invention comprises a turntable device for an apparatus having a pair of vertically adjustable work platforms with crosswalk between the platforms at the tops of the platforms, with a turntable device for each end of the crosswalk. The turntable device has a rectangular base with clamps for detachably mounting the base to the top of the platform, and a U shaped bracket pivotally mounted about a vertical axis on the base.

Abstract: A ladder support bracket for staging in which a pair of ladders are supported in a vertical position spaced from a wall and having a staging element supported by the ladder rungs. The support bracket is a rigid A-frame and the ladder is tightly clamped between the apex portion of the frame and the crossbar.

Abstract: A walk board system comprises at least first and second platform assemblies, each assembly having first and second pairs of support legs pivotally connected to the platform. At least one of said pairs of legs presents a staircase for user entry onto the platform. The legs are selectably extensible to vary the height of the platform above the underlying ground surface. The legs are pivotable to a position within the confines of the platform so as to allow for easy transport of the platform assembly between work sites. About the perimeter of each platform are a plurality of slots designed to engage a depending flange of a fastener member therein. Upon placement of the platforms in a side-by-side relationship and alignment of selected slots therebetween, insertion of a fastener within the aligned slots will maintain the platforms in selectable adjacent relationships.

Abstract: A lifting apparatus having a frame with a first bracing member and a second bracing member pivotally connected together with a ladder receptacle means affixed to an end of the second bracing member opposite the pivotal connection, and a pulley affixed to the frame so as to receive a cable therein such that a portion of the cable extends vertically downwardly between the first and second bracing member. At least one wheel is connected to an end of the first bracing member opposite the pivotal connection with the second bracing member so as to allow and end of the first bracing member to be moved toward and away from the second bracing member. A winch is attached to the first bracing member and a cable extends outwardly from the winch and over the pulley. A stop plate is connected to the frame at a location below the pivotal connection so as to limit an angle of pivotal movement of the first bracing member with respect to the second bracing member.

Abstract: The present invention relates to a device for giving access, more particularly for use in an above-ground swimming pool. The device comprises a stair and a ladder, together with two hand rails. The stair is mainly constituted by a hollow body having steps incorporated in the walls thereof. The ladder is mainly constituted by a hollow body with steps incorporated in the walls thereof. Each of the hand rails is fixed to each of the hollow bodies via at least two points. The technical field of the invention is that of manufacturing access devices for swimming pools.

Abstract: A scaffolding system for holding and hanging wallboard in an overhead orientation while using only a mechanic and one helper is disclosed. The invention comprises a plurality of braces in a vertical, opposed, parallel relationship, having paired upstanding side members for maintaining a stable, untippable status. Each side member further has a recess on a lower end adapted for receiving a wheel for mobility. A plurality of rigid sections are horizontally disposed within the braces and form a platform for the mechanic and helper to stand on. A plurality of ladders urge the helper to mount one of the side braces after the wallboard is resting on a plurality of pintles against the side members. A plurality of wheels provide mobility for the system without disassembly of the system as the wallboard is installed overhead.

Abstract: A combination pool ladder structure, fence and adjustable multi-level deck for an above-ground swimming pool having a wall which extends above the level of the ground including a frame for mounting proximate the external side of the wall, a first ladder pivotally mounted on the frame leading to a lower deck which is below the level of the top of the wall, railings on opposite sides of the lower deck, an upper deck adjustably mounted on the frame above the top of the wall, a second ladder pivotally mounted on the frame proximate the inner surface of the wall, the pivotal mountings of the first and second ladders permitting them to be swung to outwardly extending out-of-the-way positions.

Abstract: A scaffolding system which is attached to a prime mover such as a front end loader or forklift and has "Wings" or platforms extending outward from a "Center Frame" or platform and rotating in relation to it. The surface of the "Wings" upon which workmen stand is made up of individual steps. The tread of each step remains in a horizontal position during "Wing" rotation by using the principle of parallel arms. The "Center Frame" or platform can rotate in relation to a "Base Frame" to level the working surface despite the prime mover sitting on a sloping surface. All working surfaces are equipped with necessary guard rails. Hydraulic controls and emergency shut down switches are located for safe operation by all workmen.

Abstract: The invention relates to a latch mechanism for coupling a horizontal platform at a selected vertical position on a supporting structure, wherein the mechanism includes a frame member having a plurality of walls arranged to define an enclosed area and a multi-sided bracket for engaging the supporting structure to couple the frame member to the supporting structure. A locking bar extends through the frame member and bracket to engage with the supporting member and is movable between a locking position and an unlocking position. A blocking plate is coupled to the frame member and positioned outside of the enclosed area and is movable by gravity between a blocking position to prevent movement of the locking bar to the unlocking position and a releasing position to allow movement of the locking bar to the unlocking position.

Abstract: An adjustable platform for attachment to a ladder, including: a frame which can be removably attached to a ladder; a planar platform fixedly mounted on a shaft rotatably disposed in the frame; and a position adjustment mechanism operatively connected to the shaft to selectively lock the platform in a desired angular position with respect to the ladder or to permit the platform and the shaft to rotate freely within the frame, the position adjustment mechanism including no threaded fasteners.

Abstract: A portable work platform is provided having a height adjustable platform work surface and leg assemblies which may be locked into an open, use-position and unlocked to fold into a collapsed storage position.