Abstract: A folding staircase for use in a door opening having a threshold. The folding staircase has a pair of stringers that have an upper end and a lower end that is adapted for contacting a ground surface. The stringers are spanned by at least one tread. A hinge is connected to a floor near the door opening and a threshold plate pivotally connected thereto is movable between a use position and a stowed position. The staircase may be provided with a lifting mechanism that biases the staircase and threshold plate toward their stowed positions. The lifting device provides a variable force that provides more rotational force when the staircase would require a user to bear more of its weight and less force when less of the weight of the staircase would be borne by a user.

Abstract: The present invention relates to a self belay arrangement (1) for fall arrest systems, in particular for climbing applications, comprising a locking device (10), to which a rope (11) is attachable, and a connector element (12), which is performed to be attached to a safety harness of a user and to which the locking device (10) is coupled when the user intends to climb up a climbing wall (13), a ladder or other extending structures.

Abstract: An aircraft cabin area comprises a door aisle extending between two opposite aircraft doors and an aircraft monument arrangement. The door aisle has a door section adjacent each aircraft door. The monument arrangement comprises a first monument facing the door aisle in a monument section of the door aisle with an access side of the first monument. The monument section extends between the two opposite door sections. The monument arrangement further comprises at least one first trolley parking place for accommodating at least one trolley. The first trolley parking place is provided in the region of the door aisle monument section adjacent the first monument access side to enlarge a base area of the first monument when a trolley is parked therein. Further, at least one second trolley parking place for accommodating at least one trolley is provided in the region of at least one of the door sections.

Abstract: An airbag system having a base air mattress, a top air mattress, and a plurality of tubular posts positioned between the base air mattress and the top air mattress in a generally vertical orientation so that the top air mattress is supported upon the base air mattress. A plurality of breather holes are provided in either the top air mattress or the base air mattress, wherein each of the tubular posts is sealably mounted around at least one of the plurality of breather holes. The tubular posts all have a common diameter, and the tubular posts are separated from each other by a distance that is greater than the common diameter of the tubular posts.

Abstract: A work platform system having a first work platform. The system having a first bracket attached to the first scaffold and extending below and outward beyond the first scaffold between the first rail and the second rail of the first leg assembly. The system having a second bracket attached to the first scaffold and extending below and outward beyond the first scaffold between the first rail and the second rail of the first leg assembly. The system having a second work platform. The first end of the second scaffold is disposed on the first bracket and the second bracket with the first bracket and the second bracket extending between the first rung of the third leg assembly and the second scaffold. A method for using a work platform system.

Abstract: A telescopically extendable and collapsible ladder assembly includes a top ladder section, a bottom ladder section, and one or more intermediate ladder sections. The assembly may include sliding automatic release actuators, having a slanted actuating surface for interaction with actuator surfaces of spacers provided at each end of a rung of an adjacent ladder section, such that, when a rung is moved towards the rung of an adjacent lower ladder section, the activation surfaces of the spacers push the release actuators into an unlocking position and subsequently position the rung at an anti-finger pinching distance. The top rung of the bottom ladder section may be provided with a centrally arranged grip element that forms a housing for manually operable release actuators provided at the bottom side of the rung.

Abstract: A fire apparatus includes a chassis, a ladder assembly having a proximal end pivotably coupled to the chassis, and a basket pivotably coupled to a distal end of the ladder assembly. The basket includes a floor panel coupled to a top surface of a subfloor assembly. The subfloor assembly includes a front member and a rear member each extending in a first direction, an inner member extending from the front member to the rear member, an outer member having a first end portion coupled to the rear member, and an angled member extending from a second end portion of the outer member to the front member. The front member and the rear member are offset a distance from one another in a second direction. The outer member is shorter than the distance such that the angled member extends at an angle relative to the front member.

Abstract: A fire apparatus includes a chassis, axles coupled to the chassis, a turntable rotatably coupled to the chassis, and an aerial ladder assembly pivotably coupled the turntable and including a ladder section. The ladder section includes a first base rail and a second base rail extending longitudinally, a plurality of ladder rungs extending between the first base rail and the second base rail, a top plate positioned above the first base rail, a series of lacing members coupled to the top plate and the first base rail, and a gusset plate coupled to the top plate and at least one of the lacing members. The top plate extends at least one of (a) laterally inward of the gusset plate and (b) laterally outward of the gusset plate. The top plate has a solid cross section.

Abstract: A platform and a kit therefor. The platform and the kit comprises quad-chord trusses attachable end-to-end and having connector members intermediate thereof, and further comprising beams attachable at their ends to the connector members so that a beam attaches two parallel trusses. A truss comprises first and second pairs of chords which are foldable for storage and transport and unfoldable to use for erection of the platform. A track lies between the upper chords to allow movement of bolts along the track into position to attach for insertion into decking apertures for attachment of the decking. The kit also includes a sturdy and reliable and easy to use tie-up mechanism and railing along the platform perimeter which is quickly and easily attachable and reliable.

Abstract: A rigging system comprising a plurality of members including: a first hexagonal support piece comprising six side members, a plurality of rod holes, a plurality of side holes, and a plurality of set screw holes, a first rod piece that has a diameter of size configured to fit closely within to the diameter of the rod holes, a first set screw that has a diameter of size configured to fit closely within the diameter of the set screw hole, a first connection bolt that that has a diameter of size configured to fit closely within the diameter of the side hole and the plurality of members having a plurality of configurations providing structural support.

Abstract: Methods, systems and apparatuses for providing high electrical resistance for an upper control assembly (including control handles) of an aerial lift are provided through an isolation member that is integral to the upper control assembly and interposed between fluid lines in the control assembly and a set of fluid conduits that extend from the control assembly towards other portions of the aerial lift. The isolation member is a dielectric element that comprises a manifold that is made of material that is substantially electrically non-conductive, and that has a plurality of through-holes or hoses configured to allow hydraulic fluid to flow through the isolation member into and out of the fluid lines and conduits. These methods, systems and apparatuses are preferably used in upper control assemblies of aerial platforms that can carry one or more operators in order to prevent such operators from electrocution when controlling the lift.

Abstract: A safety platform includes a sliding frame capable of attaching to a unit, and a deck having at least one deck side. The deck is movable between a stowed position and a deployed position. The safety platform further includes a stair, ladder, or ramp operatively connected to the at least one deck side and capable of extending therefrom, at least one vertical post member connected to the deck, a handrail operatively connected to the at least one vertical post member, and a vertical toeboard operatively connected to the at least one deck side, excluding a portion of the deck operatively connected to the stair, ladder, or ramp. The handrail is configured to extend along and parallel to an outer side of the stair, ladder, or ramp, and the at least one deck side, excluding a portion of the deck operatively connected to the stair, ladder, or ramp.

Abstract: A horizontal lifeline system includes a first termination arrangement structured to attach to a first anchor point, a second termination arrangement structured to attach to a second anchor point, a horizontal lifeline cable coupled to the first termination arrangement, a rope length adjuster attached to the horizontal lifeline cable and having a housing through which the horizontal lifeline cable can be pulled to adjust the length of the horizontal lifeline system and apply tension to the horizontal lifeline cable, and a tension limiting ratchet coupled between the second termination arrangement and the rope length adjuster and being structured to be ratcheted to increase tension applied to the horizontal lifeline cable and to provide an indication and deter further ratcheting when the tension applied to the horizontal lifeline cable reaches a predetermined tension limit.

Abstract: A descender device is disclosed for enabling a controlled descent of a load along a tether. The device comprises a frame having a front and rear side, and a first and second aperture disposed therein for receiving a tether. The first and second aperture extend between the front and rear side of the frame and the tether being arranged to pass between the first and second apertures substantially parallel to a longitudinal axis of the frame. The device further comprises a control bar disposed within the first aperture. The control bar extends across the first aperture and is constrained to move in a plane of the aperture, substantially transverse to a longitudinal axis of the bar. In use, the tether is arranged to loop around the control bar within the second aperture and the free ends of the tether are arranged to extend out from the first aperture, away from the front side of the frame.

Abstract: A collapsible ladder includes two vertical stiles with rungs disposed therebetween. Each stile is formed by a plurality of telescopically collapsible columns. Each collapsible column has a bottom opening, an inner wall and a cover to cover the bottom opening. The cover has a small cylindrical portion and a large cylindrical portion with a peripheral surface located under the small cylindrical portion. The small cylindrical portion is inserted into the bottom opening of a column The large cylindrical portion is exposed outside of the column and inserted inside of a next lower column. A sealing ring is disposed inside a annular groove and touches the inner wall of the next lower column when the stile is extending or collapsing. One or more air ducts are provided in the cover. A first air opening iarranged above the large cylindrical portion in correspondence with an opening in a lower wall part of the column.

Abstract: An adjustable platform extension bracket for work platform systems comprises a post member having two posts joined by a plurality of positional structures. A first connection portion forms a first channel such that the first connection portion is symmetrical along an axis parallel with and passing through the channel. The post member is slidingly engaged in the first channel such that at least one of the positional structures is positionable in the channel. The bracket does not require any diagonal support. The dimensions of work platforms, particularly suspended work platform systems, may be extended using the adjustable platform extension bracket.

Abstract: Disclosed is a smart ladder. The smart ladder may be A-frame type of ladders, such as A-frame ladders and A-frame platform ladders. The smart ladder includes right and left outrigger leg units which are swiveled coupled to the right and left sides of the ladder to provide side support. The ladder includes brace units facilitate in folding and unfolding of the ladder as well as the outrigger legs. An electronic system, which includes a sensor network, a processor and a warning system, is provided. The sensor network senses side inclination angle of the ladder and side force on the outriggers and predict potential hazards from exceeding load and angle thresholds. This enhances safe operation of the ladder and avoids injuries to the user and others in the vicinity.

Abstract: A restraint arrangement for an evacuation system may comprise a first strap configured to be disposed along a length of the evacuation system, and a second strap configured to be disposed along the length of the evacuation system, wherein the first strap is coupled to the second strap, the first strap is coupled to the evacuation system via a first plurality of attachment members along the length of the evacuation system, the second strap is coupled to the evacuation system via a second plurality of attachment members along the length of the evacuation system, and the first strap is configured to separate from the second strap in response to a predetermined load.

Abstract: The object of this patent application consists of a safety belt to be overlaid on the original back portion of the seat belt air belonging to the field of safety engineering, whose technique allows the rapid detachment by third parties, with the pull of a single rigging included, for the case where the user on air position is unable to do so in the case of rescue, more specifically the overlay safety belt with disengageable rings (1) that includes a lumbar belt (2), with an elongated base strip (3), which is stitched over, another upper strip (4), which overlaps the original belt, the base strap (3) over which there is another woven upper strip (4) whose set overlaps itself to the original belt, and the base strip (3) has, at each end, a hinged end that lays down the original air safety belt end buckles, upper strip (4) features an engagement fold (6), preceded by a grommet (8), and a double rigging (10), has its ends equipped with a metallic pin (11).

Abstract: A retract gate has an upper roller assembly, a lower roller assembly, an axial tube, a holding pole, and a screen body. The upper roller assembly has a rolling mechanism and a controlling mechanism. The controlling mechanism has a switch and an engaging component, the engaging component selectively sticking the differential crown gear. Two ends of the axial tube are connected with the upper roller assembly and the lower roller assembly. Two ends of the screen body are securely fixed on the holding pole and the axial tube. When the upper roller assembly is turned on, the rolling mechanism is released; when the upper roller assembly is turned off, the rolling mechanism can memorize the maximum length of the screen body and make the screen body not able to be unrolled further. Consequently, the retract gate can restrict babies and pets within a safe area.