Abstract: A foldable sawhorse/worktable (10) comprising a work platform (12), a pair of scissor side support assemblies (14) and a pair of cross braces (16) horizontally extending between the scissor side support assemblies (14) for stabilization purposes. Structures (18) are for pivotally mounting top ends of each scissor side support assembly (14) to the underside (20) of the work platform (12). It can be placed into a folded position with the work platform (12) vertical to be conveniently stored and can be placed into an unfolded working position with the work platform (12) horizontal to support various types of power tools and all kinds of construction materials.

Abstract: A marine vessel ladder system that is primarily used for overboard emergency situations. The ladder system is collapsible and separable into two pieces with one piece substantially smaller than the other. The smaller piece serves both as a retainer to hold the larger piece in a folded, stowed position and also as a connector to fasten the larger piece to a customized area along an edge of the vessel's deck. The ladder system is deployable by one deckhand and includes vertically oriented upper and lower ladder sections with a horizontally oriented grate section therebetween. Fixed vertical railings and collapsible side railings are provided for assistance in ascending and descending the ladder system. Optional safety straps are provided to secure the system prior to and during use.

Abstract: An elongate tether of flexible material has a first end with a fastener for securing the tether to an escutcheon member or canopy surrounding an opening in a building wall, ceiling or floor, and a second end for securing to a pipe extending through the opening. The second end of the tether has a slot through which a flexible tie member such as a cable tie extends. The tie member can be looped around a pipe to secure the tether to the pipe.

Abstract: A work platform for temporary installation under a bridge span includes a plurality of longitudinal support cables supporting transversely extending grating planks, with sidewise adjacent planks being interlocked by lock pins. A selected subset of the grating planks are releasably fastened to underlying support cables T-shaped clamping members inserted through slots in the selected grating planks.

Abstract: A ladder leveling accessory system for leveling a ladder on sloped, uneven, or rough surfaces includes a pair of leg extensions held to the rails of the ladder by two sets of bands coupled to the rails of the ladder. The leg extensions are secured in place by a spring loaded handle extending through both leg extensions, the upper bands and the rails of the ladder. In a preferred embodiment, each leg extension includes a pivoting foot having a gripping portion for facilitating secure placement of the foot on a surface.

Abstract: A tree stand extension device has a rectangular, hollow base frame. The base frame has a center beam connected centrally, along a long axis, to the base frame. A plurality of engagement arms are attached to the base frame and the center beam to hold a tree stand. The plurality of engagement arms are parallel to each other along a short axis of the base frame and are a predetermined distance apart. The device further includes a pair of top attachment arms and a pair of corresponding bottom attachment arms. The pair of top attachment arms are coupled to the pair of corresponding bottom attachment arms, wherein a tree stand positioned on the remaining end of the plurality of engagement arms is encased therein by the pair of front attachment arms and the pair of corresponding rear attachment arms. In one embodiment, the coupling is accomplished by having a plurality of apertures in each of the pair of front attachment arms and the corresponding rear attachment arms.

Abstract: A safety harness for stairs including a safety belt having a first end portion adapted for adjustable coupling with a torso of a wearer. A second end portion of the safety belt is retractably coupled to a ceiling area at a top of a flight of stairs. An intermediate portion of the safety belt is secured to a wall area adjacent to the flight of stairs. The safety belt will lock when suddenly tugged on to prevent the wearer from falling.

Abstract: A personnel lift (20) including a three-wheeled transport in which a rear or transport wheel (30) is connected to a lever arm or handle (32) that is designed to raise and lower the transport wheel (30). Pulling the handle (32) downward drops the transport wheel (30) to ground level raising the support legs (34) off the ground. Raising the handle (32) lifts the transport wheel (30) off the ground, dropping the support legs (34) onto the ground. An electric interlock system is utilized to prevent the vertical lift assembly (24) of the personnel lift (20) from being used when the support legs (34) are not on the ground. The electric interlock system includes three switches (89, 104a, 104b), all of which must be closed in order for the aerial work platform (22) to be elevated. Two of the switches (104a, 104b) are operated by the support legs (34). The switches (104a, 104b) in the support legs (34) are closed when the support legs are in full contact with the ground.

Abstract: An emergency escape device is composed of a cap, a cylindrical main body, a conical movable body, and a rope. The cap is provided with an operation pin and a plurality of movable handles capable of triggering the operation pin so as to actuate the escape device. The main body is provided therein with a conical receiving hole for disposing movably the conical movable body. The rope is wound around the conical movable body such that the rope is in contact with the inner wall of the conical receiving hole of the main body. The moving speed of the escape device is dependent on the extent of the friction between the rope and the inner wall of the conical receiving hole of the main body. The top end of the rope is fastened with a safety hook engageable with a fixed object located in a building. The main body is provided with a plurality of retainers for holding carriers intended for use in carrying escapees.

Abstract: A gate for carabiners is disclosed including a first wing, a second wing and a bridge connecting the two. The first wing, the second wing and the bridge are stamped or otherwise cut out of a sheet of metal or other durable, bendable material. The wings are then bent relative to the bridge so that they oppose one another and form sides of the gate. One end of the gate is attached to the carabiner, while an opposing end of the gate is provided with a catch to selectively close an opening in the carabiner, and thereby selectively hold ropes or other items within the carabiner. In accordance with one aspect of the invention, a liner is disposed about the carabiner gate to limit wear caused to ropes, etc., by the carabiner gate. In accordance with another aspect of the invention, the area between the wings is filled with a filler to increase the strength of the gate.

Abstract: A personnel lift (20) including a three-wheeled transport in which a rear or transport wheel (30) is connected to a lever arm or handle (32) that is designed to raise and lower the transport wheel (30). Pulling the handle (32) downward drops the transport wheel (30) to ground level raising the support legs (34) off the ground. Raising the handle (32) lifts the transport wheel (30) off the ground, dropping the support legs (34) onto the ground. An electric interlock system is utilized to prevent the vertical lift assembly (24) of the personnel lift (20) from being used when the support legs (34) are not on the ground. The electric interlock system includes three switches (89, 104a, 104b), all of which must be closed in order for the aerial work platform (22) to be elevated. Two of the switches (104a, 104b) are operated by the support legs (34). The switches (104a, 104b) in the support legs (34) are closed when the support legs are in full contact with the ground.

Abstract: An accessory securable to the top cap of a step ladder for temporary storage of tools, parts and the like. The accessory includes a support which is securable to the top cap by various clamping arrangements which may include bolts, springs or tie downs. A tray member is pivotally attached to the support and in a deployed position extends horizontally forwardly. In a folded or storage position, the tray member is in overlying registry with the top cap of the ladder. In an alternate embodiment, the support is adjustable to accommodate step ladder caps of varying dimensions.

Abstract: A rappel rope storage and deployment system includes a bag for storing a pel rope, the bag having a first opening for exposing a first end of the rope, a second opening for exposing a middle portion of the rope, and a third opening for exposing a second end of the rope. The system further includes a rappel rope disposed in the bag, the first end of the rope extending through the first opening and outwardly from the bag, the first end being enlarged to prevent passage of the first end through the first opening, the middle portion of the rope extending through the second opening for withdrawal of a double strand of the rope from the second opening, and the second end of the rope extending through the third opening for withdrawal of a single strand of the rope from the third opening. The system further includes straps and fasteners for releasably connecting the bag to a person.

Abstract: Ladder stabilizers for lateral attachment to an extension ladder for inhibiting sideways slipping and falling thereof accordingly to full safety. A long tube support made from non-rusting, a non-articulated bracing member, and a ladder side rail form an A-frame with the tube support and the side rail comprising the legs of the A and the bracing member comprising the horizontal connecting member of the A. The lock for the telescoping sections visibly indicates they are locked, this as per American National Standard ANSI A14.2-1990, par. 6.7.10, the installation being fully secured because of the technically safe locking device the telescopic tube is blocked with a spring pin. Ladder stabilizers are telescopic tubes for uneven ground and are pivotable along only the same surface of the ladder, thus enlarging the sustentation polygon for ladder support.

Abstract: A work support device with adjustable length legs used to stabilize the work support on an uneven bearing surface, that is height adjustable, allowing the user to raise a supported work piece to a desired height, and that is levelable in that the user can adjust the work support to level the work piece being supported. Both the adjustable length legs and the height adjustable upper beam are self locking. Unlocking the height adjustable upper beam to allow downward movement is accomplished with finger pressure on a rod. Unlocking the adjustable length leg is accomplished with finger pressure on a lever. The self locking action occurs immediately upon releasing pressure on either the rod or the lever.

Abstract: Safety scaffold or platform foldable structures for ladders are disclosed. The scaffold structure embodies an elongated expandable scaffold floor section which is removably connected to two spaced apart upstanding ladders. Male and female floor sections are expanded to the desired length and locked in place by a locking pin. Spaced apart double hook hinges are releasably secured to one rung on each ladder. Wedge mechanisms work in conjunction with the hook hinges engaging the ladder rails to secure the scaffold structure in the horizontal open working position. The platform structure in the form of the letter H is removably connected to two adjacent rungs of a single ladder. The pair of hook arms hook around the upper rung and a pair of bottom arms support the structure on the lower rung. Descending wedge mechanisms engage the ladder rails in supporting the platform structure in the horizontal open working position.

Abstract: A security device for detachably attaching a lanyard to a safety device. The device includes a main frame portion defining a U-shaped safety line channel for receiving a safety line, and a movable frame portion pivotally mounted to the main frame portion and carrying a cam portion for frictionally engaging the safety line. The cam portion is movable into engagement in response to a downward force from a lanyard attached to the movable frame portion. The cam portion is mounted on bushings aligned with apertures in the main frame portion and held in position by removable pin members. The pin members, in combination with the bushings provide a strong beam structure extending across the main frame portion to provide a rigid support structure for the cam portion for resisting deformation of the structure when a heavy load is applied.

Abstract: A self-locking descender for a rope comprises a pulley in the form of a rotary cam designed to press the rope against a braking surface of a stud. The pulley is mounted on an operating plate associated with an operating handle. To reduce the unlocking force on the operating lever, a part of the friction forces is taken up by a load-shedding pin situated facing the circular sector of the cam. The rope passes via the load-shedding pin and comes partially into contact with the pulley.

Abstract: A personnel lift (20) having adjustable side-to-side shim assemblies (38a-d) used in conjunction with a series of slide blocks (39, 40) in the mast of the personnel lift. The mast of the personnel lift includes a number of nested columns (24a-e) that extend to lift a person and an aerial work platform (22) to a desired height. The shim assemblies (38a-d) and slide blocks (39, 40) are used to maintain the nested columns (24a-e) in proper alignment, and the shim assemblies (38a-d) are adjustable to account for wear. The adjustable features of the shim assemblies (38a-d) are accessible when the columns are fully assembled, which allows the shim assemblies (38a-d) to be adjusted without requiring that the mast be disassembled.

Abstract: An abseil device including an integral main body (1) with two generally parallel main flanges (3, 4) joined together via a longitudinal connecting flange (6) and provided with two apertures (13, 14) engaged by a hook ring (2). The apertures (13, 14) include slanted edges (12) along which the hook ring (2) is slidable for wedging an intermediate portion (17) of a rope (5) and thereby locking the abseil device thereon. The device can be released by pivoting the main body (1). A self-locking abseil device suitable for mountaineering, caving, rock climbing or work in places high above the ground is thus provided.