Abstract: A system and method of operating a scissors lift assembly are provided. The system includes a hollow piston rod including an internal fluid reservoir, a cylinder body that is coaxial with and at least partially surrounding the hollow piston rod, and a fluid pump in flow communication with the reservoir through a suction channel extending from the internal fluid reservoir though a transfer tube to a suction port of the fluid pump. The transfer tube is coaxial with the piston, the piston rod, and the cylinder body and a discharge port of the fluid pump is in flow communication with an extension pressure chamber.

Abstract: A collapsible stair with foldable ramp can include a first step, and a second step nestable within the first step such that when the collapsible stair is in a closed position the second step is aligned with the first step and when the collapsible stair is in an open position a lateral offset between the second step and the first step is increased. A third step can be nestable within the first step such that when the collapsible stair is in a closed position the third step is aligned with the second step and is in an open position a lateral offset between the third step and the second step is increased. A ramp can be rotatably coupled to the first step to rotate from a stair position to a ramp position, wherein the ramp position comprises the second step and the third step being covered by the ramp.

Abstract: A ladder system includes a ladder having a ladder top, the ladder top having at least a first slot. A container having at least a first protrusion that engages with the first slot to hold the container to the top. A method for working from a ladder. The method includes the steps of filling a container with objects and engaging a first protrusion of the container with a first slot of a top of the ladder to hold a container to the top.

Abstract: There is provided a height rescue apparatus comprising a safety line (1) which is attached at (3) to a flexible elongate element (2) which has a lower tensile strength than the safety line 1 which is wound on a drum (9) which is part of a speed control means. A friction device (5) acts on a portion of the safety line (1) to reduce tension in said portion of the safety line by at least 50% in a full arrest situation. The drum (9) or the speed control means is held in a first position which prevents rotation of the drum and release means can be actuated after the fall arrest to allow the drum to provide a controlled lowering action.

Abstract: A runner 7 has a housing 21 with two runner wheels 23 attached to the housing. The housing includes a sleeve 25 that can freely turn around the longitudinal axis 27 in a channel 29 present in the housing. The sleeve constitutes an elongated guide opening by which the runner can be moved over the guide cable. Longitudinal slots extending in axial direction are present in the walls 21A, 25A of the channel 29 and of the sleeve 25. Each slot has a middle section 31A, 33A. The width 34 of the middle section 33A of the longitudinal slot in the sleeve is smaller than the width 32 of the middle section 31A of the longitudinal slot in the housing, and, furthermore, the width 34 of the middle section 33A of the slot 33 in the sleeve is smaller than the diameter of the guide cable 3 the runner 7 is suitable for.

Abstract: A ladder assembly for a work vehicle comprises a deck affixed horizontally just below an entry door of the cab. A yoke is pivotally joined to a support member of the deck for rotation about a vertical axis below the deck surface. The yoke has a pair of arms pivotally joined to an upper end of a ladder structure for allowing rotation of the ladder about a horizontal axis. A turnbuckle is coupled between the support structure of the deck and one stringer of the ladder while a mechanical actuator is operatively coupled to the ladder's other stringer and to an arm of the yoke to which the other stringer is attached. Operation of the mechanical actuator moves the ladder reciprocally between a use position and stowed position where the stowed position is parallel to and immediately below the deck.

Abstract: A climbing system for inhibiting a ladder from tipping includes a ladder that may be climbed. A platform is provided and the platform may be positioned on a support surface. The ladder is removably coupled to the platform such that the platform inhibits the ladder from tipping.

Abstract: There is provided a climbing locking system for climbing ladders in particular of a wind power installation. The climbing locking system has at least one climbing ladder segment having a longitudinal direction and at least one open end for accommodating a fall arrester which can move back and forth as a climbing protection system along the longitudinal direction. The climbing locking system also has at least one climbing locking unit at the at least one open end of the climbing ladder segment. The climbing locking unit is fastened pivotably to the climbing ladder segment and has a locking position for locking a movement of a fall arrester along a direction of the climbing ladder segment and a passing position for allowing a movement of the fall arrester along the longitudinal direction of the climbing ladder segment in both directions.

Abstract: This invention relates generally to a deck with a slidable platform such as for use in construction.

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

Abstract: An assembly of a sling detachably attached to an adjustment device for suspending one structure relative to another structure. The adjustment device comprises a pair of elongate spaced apart plates which are attached to each other and to a hook, for attachment to one of the structures, at the first end portion. Each plate has a plurality of pairs of longitudinally spaced aligned holes for receiving a pin for connecting one end of a sling to the adjustment device at a selected incremental one of the plurality of pairs of holes. The other end of the sling is connected to the other structure to adjust the distance over which the one structure is suspended relative to the other structure. To allow greater adjustability, two or more of the adjustment devices are joined end-to-end.

Abstract: A suspended scaffold assembly for mounting a scaffold. The suspended scaffold assembly comprises a plurality of horizontally-spaced-apart vertical support members comprising a suspension cable with at least one coupling ring secured thereto and at least one horizontal member. Each one of the at least one horizontal member is removably connectable to a respective one of the at least one coupling ring of two spaced-apart ones of the plurality of vertical support members. A vertical support member for a suspended scaffold assembly, a kit for mounting a suspended scaffold assembly and a method for mounting same are also provided.

Abstract: A safety apparatus configured for attachment to a manlift and configured to prevent objects falling over the side of the manlift from striking objects and people beneath the manlift. One embodiment includes a frame configured to support netting that is disposed on the platform of an open-sided manlift and angled outward to intercept objects falling vertically outside the surface area of the platform. Another embodiment includes a frame that extends beyond the lip of a dosed-sided manlift and contains netting configured to catch objects falling outside of the surface area of the closed-sided manlift.

Abstract: An emergency escape slide container includes a first portion having a first end wall and a first side wall, the first side wall and the first end wall defining a first storage space that is sized and shaped to receive an emergency escape slide. The first side wall also includes a first rolling mechanism. The emergency escape slide container also includes a second portion having a second end wall and a second side wall, the second side wall and the second end wall defining a second storage space sized and shaped to receive the emergency escape slide. The second side wall also includes a second rolling mechanism. The first portion and the second portion cooperate to define a third storage space therebetween, the third storage space being equal to a combination of the first storage space and the second storage space.

Abstract: A firefighting or rescue apparatus includes a ladder to which a recovery winch is operably mounted so that the winch can be used to move, upright, lift or otherwise manipulate target objects at an emergency location. The ladder can include a pulley detachably mounted to the ladder distal from the winch, the pulley adapted to suspend a cable extending from the winch at an upper end. In operation, the winch moves along with the ladder as the ladder moves, so that the winch and pulley can be strategically located over a target object for movement thereof. The apparatus can include a remote control connected to the winch for operation of the winch by a user.

Abstract: A seal assembly for an upward acting door that is positionable between an open and closed position. The seal assembly contains a base member having a first and second flexible sealing member extending therefrom for sealing engagement with the door. The base member is mounted adjacent the door to facilitate sliding engagement between the door and the first and second seal members as the door is moved between the open and closed positions.

Abstract: A ladder system for a boat having gunwale tubing comprises a ladder including two side rails and at least one rung transversely disposed across the side rails and a platform having a curved recess and platform surface. The top portion of the ladder is pivotably attached to the side of the platform and extends downward therefrom. The platform is disposed on the gunwale tubing of the boat such that the curved recess of the platform receives and engages the tubing. A stanchion extends laterally from the ladder and includes two support each extending from a corresponding side rail of the ladder. A stanchion pad is disposed at an end of said stanchion disposed between the two stanchion supports, and engages the hull of the boat to prevent twisting of the ladder when it is deployed. The ladder system prevents deformation of the gunwale tubing while providing enhanced stability.

Abstract: A rope descent device and method capable of maintaining a fast but safe descent rate of a user carrying a heavy load or equipment.

Abstract: Systems and methods relate to a operator selectable, variable-height attachment point system for a safety harness, where the attachment point is disposed on a radial support member that can be reversibly coupled to a vertical support member, and where the attachment point height can be selected by the operator by reversing a coupled orientation of the radial support member to the vertical support member.

Abstract: A wheel and bracket device that is removably attachable to a ladder. The present invention allows users to more conveniently transport a ladder, ladder tree stand, or other such device, along with objects that may be supported thereon. The present invention is a bracket that is adapted to enclose a rail and a rung of a ladder and be securely affixed to the ladder via a locking mechanism, such as a locking pin. A wheel is rotatably attached to the bracket, thereby allowing users to push or pull the ladder across terrain, rather than being forced to carry the ladder.