Abstract: A mechanism that allows a ladder to be moved to either a use position or a retracted position. The ladder can be moved from the retracted position to the use position with a minimal effort, and the ladder moves by itself from the use position to the retracted position. A pit ladder apparatus for an elevator according to the present invention includes a position change means to be provided in a fixing metal frame fixed to the hoistway and allowing a ladder to be moved to either the use position when the ladder is used or the retracted position for retracting the ladder when it is not used so as not to interfere with operation of the elevator.

Abstract: A retractable catwalk and railing device facilitates movement of a catwalk and rail between a storage position to a use position. The device includes a first and second mounting brackets in a spaced horizontally aligned relationship on a vertical surface. A catwalk is pivotable between a stored position and a deployed position between the first and second mounting brackets. A lip extends upwardly from the first mounting bracket. A flange is movably coupled to the catwalk to abut the lip when the catwalk is in the stored position retaining the catwalk in the stored position. The flange is movable relative to the catwalk to disengage from the lip allowing the catwalk to be pivoted into the deployed position. A rail is pivotally coupled to the catwalk.

Abstract: A retractable deer stand ladder system for providing a ladder that is efficiently concealed from wildlife. The retractable deer stand ladder system generally includes a support member having an elongated structure, an upper end and a lower end, a plurality of first steps pivotally attached to a first side of the support member, and a plurality of second steps pivotally attached to a second side of the support member. The first steps and the second steps each have an extended state where the steps extend outwardly from the support member for a user to climb upon. The first steps and the second steps also have a refracted state where the steps extend substantially parallel with respect to the support member for concealment.

Abstract: A folding emergency escape ladder for a dwelling includes a fixed vertical riser for fitting to the external wall of a dwelling, spaced apart, retractable rails pivoted thereto from a first end to function as rungs of the ladder and a movable vertical riser fitted in correspondingly from a second end of the rails such that the ladder is moveable between a retracted state with the rails folded up into the fixed and retracted vertical risers and an expanded, deployed state with the rails and risers functioning as a ladder mounted to the wall, one or more rails including an elongate rail rung terminating at the first and second ends in a rung head including an integral pivot and a projecting lobe extending radially from the pivot, the lobe including a buffer foot abutting a portion of the vertical risers coincident with the deployed state to buffer deployment of the ladder.

Abstract: A stepladder includes a front section having a right front rail and a left front rail in parallel and spaced relation with the right front rail, and front steps attached to the right and left front rails. The ladder includes a rear section having a right rear rail and a left rear rail in parallel and spaced relation with the right rear rail, and a rear horizontal attached to the right rear rail and the left rear rail. The ladder includes a top to which the front and rear sections are connected. The ladder includes a tray pivotally attached to the right and left rear rails having a closed position essentially in parallel with the right and left rear rails and an opened position essentially in parallel with ground, the tray pivoting up from the closed position to the open position. A method for using a stepladder. The method includes the steps of positioning a front section and a rear section of the stepladder attached to a top of the stepladder.

Abstract: A modular ladder comprises a base having a back end and a front end. A vertical support is attachable to the back end of the base. The ladder also includes a stair section assembly comprising a plurality of steps. The stair section assembly has a front end and a back end. The front end of the stair section assembly is attachable to the front end of the base. The back end of the stair section assembly is attachable to the vertical support. The stair section assembly comprises a separate top step, whereby the top step is capable of being attached to the stair section and whereby the attachable nature of separate top step facilitates storing the ladder in a compact container which is smaller than the stair section and top step when placed in an assembled condition. A method of storing the ladder in a compact container is also disclosed.

Abstract: An escape ladder includes a first leg that is attached to a support surface, such as an outside wall of a building, and a second leg that is movable with respect to the first leg. Rungs are movably attached to the first leg and to the second leg and move between a deployed orientation extending outwardly from the first leg to a stored orientation extending along the long axis of the first leg. The legs and the rungs are rigid.

Abstract: A folding ladder includes a first side rail and a second side rail, and at least one rung pivotally attached at its ends to the first and second side rails. The ladder further includes at least one diagonal locking member having a first portion pivotally attached at a first end to the first side rail and a second portion pivotally attached at a first end to a second end of the first portion and a second end pivotally attached to the second side rail. The locking member locks the folding ladder in a use position.

Abstract: A foldable ladder having two rails with several rungs pivotally mounted on each end to rail extensions. The rail extensions are fixed to the rails and extend towards each other. A pivot joint in each rail extension connects a common rung to allow the rung to be pivoted on two of its ends. To prevent the normally pivotally joined rungs from moving when the ladder is in an opened position, a bracket is slidably mounted on the top and bottom ladder rungs.

Abstract: A foldable ladder suitable for boarding a boat from the bow end thereof having laterally spaced side rails each with upper and lower portions. The upper and lower portion of one side rail are hinged together or pivoting in an outward direction and the upper and lower portions of the other side rails include a releasable connection. A plurality of steps extend between the side rails and are connected at their ends to the adjacent side rail by hinges. A releasable latch mechanism interconnects the side rails for holding the ladder in its unfolded condition.

Abstract: Provided is a folding ladder assembly for over-the-road trucks. The folding ladder assembly includes a fixed ladder rail secured to a vertical wall portion of the cab of the over-the-road truck, and a moveable ladder rail interconnected with the fixed ladder rail and positionable between a collapsed, storage position and an extended use position. The folding ladder assembly further includes a ladder stabilizing mechanism disposed at the upper and lower portions of the moveable ladder rail assembly for stabilizing the folding ladder assembly when it is positioned in the extended, use position.

Abstract: The disclosed is a method comprising the steps of displaying entirely a plurality of storehouse facilities in the form of a plan view; informing a storage abnormality when the actual storage location and stock condition are different from that displayed in parallel with displaying the stock condition at each instant; and correcting the stock condition at the time the storage abnormality is informed. Shelves are distinguished using displayed figures in accordance with shelves in which already stored, shelves still remaining empty, and shelves for which storage is prevented; and the stock condition of the storehouse facilities is displayed by specifying any of the facility on the displayed surface.

Abstract: A pair of laterally positioned struts are interconnected by a plurality of rungs, each rung being formed of a pair of pivotally mounted rung sections. A central rod extends between the inner ends of the rung sections of each rung, the central rod being rigid with a fastener member beneath each pair of rung sections. The inner ends of each pair of rung sections are individually pivoted to a fastener member. A pair of diverging stabilizing rods are centrally joined to a joinder member slidably on the central rod and positionable in direct underlying and supporting engagement with the fastener member of the lowermost rung in the open position of the ladder.

Abstract: An emergency escape device includes a rectangular carrier in which a rope-ladder is stored. The carrier includes upper and lower horizontal beams, and two vertical side beams interconnecting the upper and lower horizontal beam. Each of the vertical side beams has a retaining member to retain spacers that are fixed to two ends of the rungs which, in turn, interconnect two parallel cables so as to define the rope-ladder.

Abstract: The following invention relates to a fold out fire escape ladder. The ladder comprises at least two parallelly arranged strings (1, 2), which are interconnected by means of a plurality of pivotally arranged parallel rungs (3). The holes for the pivoting points (38) of each rung are arranged in off-centered positions, which positioning increases the strength of the ladder in a surprising manner. Furthermore the inner string (1) comprises mounting means (12), intended to co-operate with brackets (4), which substantially facilitate the attachment of a ladder.

Abstract: A step ladder which folds with respect to a width and a depth thereof. A set of unidirectionally foldable steps is pivotally attached between a pair of side rails, and an extendible cross-bracing assembly is disposed between another pair of side rails. Foldable spreaders are pivotally attached between opposing side rails. Each step has two halves, and a brace is pivotally attached to each half. A translation assembly is disposed in each side rail to which each brace is attached. When the ladder is folded with respect to its width, the steps fold upward, drawing the braces upward by means of the translation assembly. When the ladder is folded with respect to its depth, the spreaders are folded, resulting in a completely folded ladder with the steps and the braces substantially contained within the side rails. A locking assembly is disposed between the side rails for preventing the ladder from folding.

Abstract: A foldable ladder including a foldable support frame mechanism and a head step assembly releasably mounted to the support frame mechanism. The head step assembly comprises a pair of base plates each having protuberances on both sides thereof and a number of step plates each having holes complementary in shape to the protuberances on the base plate. Two step plates and one base plate can be stacked together side by side through protuberance and hole engagement to form a bundle which can be stored within the support frame mechanism in its folded position.

Abstract: A foldable ladder has collapsible crosspieces having a 90-degree pivot in the middle, the crosspieces being mounted to opposite side rails likewise having 90-degree pivots. Push rails are provided to the right and left of the crosspiece inside each sidepiece so as to move the ladder between folded and depolyed positions.

Abstract: A folding ladder comprising a plurality of hingedly intermounted sections having channel-shaped side members, ladder rungs being shiftedly connected to a first of the side members and being pivotally connected to a second of the side members, such that the rungs slide upon collapse of the side members together after a folding of the sections into a compact unit for carriage and storage.

Abstract: A folding ladder of the type made up of a pair of side rails to which rungs are pivoted at opposite ends for folding of the structure from an open mode, in which the rungs are horizontal, to a closed or folded mode in which the rails move lengthwise relative to each other as well as toward each other as the rungs pivot about their respective pivots, parallel-link fashion. The present improvement resides in the design of each rail in semi-circular section in which the open side of the C thus formed faces inwardly toward the open side of the C of the other rail, whereby, in the closed mode, the two rails form a cylindrical shell within which the rungs are housed or confined, leading to a compact package that is easily carried, shipped, etc.

Abstract: A folding fire-escape ladder with safety belt, made of two U-shaped channels (A,S), which form the side rails, and rungs (W) of square tubing. The rungs are attached to the side rails by articulated joints. The ladder has a burglar proofing device on the top (J,K). One or more separate release points at escape stations can be installed by sawing through the outer rail (A) to form at least two sections thereof and by fixing a release bracket (O) to a section of the outer rail (A) above the cut. The release bracket (O) has a collar (R) which replaces the material removed by the saw. Joining the upper and lower sections of the outer rail (A) at the release point/escape station is achieved by a locking plug (K) which is fitted through axially aligned holes in the outer rail (A) and the release bracket (O).

Abstract: This invention relates to a ladder device, particularly to one that is collapsible. More particularly, provided is a ladder that can be opened or closed from the ground or some elevated point. Additionally, there is provided a feature so that the ladder can be completely closed. The ladder comprises a remote-control system that permits all of the above-identified attributes to be accomplished.

Abstract: The invention concerns improvements to a folding ladder consisting of two angle section uprights arranged facing one another, of which the surfaces perpendicular to the plane of the ladder carry two longitudinal ribs provided with facing perforations, receiving pivots for articulating rungs to enable them to be folded. Three essential points are improved: holding the ladder to the wall, the electric release system for opening the ladder, the correct placement of the system of release of the ladder at the different vertical points from which the whole ladder can be directed manually or electrically to open.

Abstract: A ladder comprises a pair of main stiles, a series of centrally-hinged rungs with ends articulated to the two main stiles, whereby the ladder can adopt a folded inoperative configuration in which the main stiles are alongside each other and an extended operative configuration in which the main stiles are spaced from each other, and means for stopping the ladder in the extended operative configuration. The main stiles are articulated together at their upper ends and the ladder further includes a single auxiliary stile articulated at its upper end to the two upper ends of the main stiles about an axis substantially perpendicular to the articulation axis of the two main stiles. The auxiliary stile is movable between a position alongside the two main stiles, corresponding to the folded inoperative condition of the ladder, and a position spaced from the main stiles, corresponding to the extended operative condition of the ladder.

Abstract: The present invention relates to a foldable stepladder constituted by:a first pair of two main uprights,a plurality of steps,a device for maintaining said steps in their unfolded configuration,a second pair of two auxiliary uprights,wherein the auxiliary uprights are articulated at one of their ends on the upper part of the main uprights and they are articulated on each other about a pin in their median part to present, in unfolded position of use, the form of a cross, said auxiliary uprights being connected from said mutual pivot point to the central upright by a connecting rod. The invention is more particularly applicable to the manufacture of foldable stepladders.

Abstract: A folding ladder comprising two pairs of uprights hinged at their top and a plurality of rungs connected to said uprights, in which each rung is formed from two equal portions hinged together and is connected to the other rungs at said point of mutual hinging by a rod parallel to the uprights. Moreover the rungs are hinged at their ends to said uprights for passing from the working configuration of the ladder in which they are orthogonal to the uprights, to the folded configuration of the ladder in which they are substantially parallel to the uprights.

Abstract: A ladder wherein a plurality of rounds are pivotally and turnably mounted to and between the right stanchion and the left stanchion at proper spaces, and supporting arm levers are detachably fixed from both stanchions to the round by bolts or machine screws.

Abstract: A contractible escape ladder, configured for deployment from a collapsed configuration outwardly proximate a wall of a building structure to an escape configuration, is comprised of first and second ladder rails pivotal about a plurality of ladder rungs bridging same and nestable interiorly thereof and a latching member for maintaining the rails juxtaposed one to another in the collapsed configuration, including a latch release pin traversing the wall for deployment of the ladder from a position inside the building while maintaining the ladder secure from positions outside the building.

Abstract: A self-storing foldable ladder having a pair of side rails and a plurality of step rungs, each rung being pivotally mounted to one of said rails. The other of said rails includes a guide pin for cooperatively engaging a longitudinal groove within the rung. The rungs are adapted for swingable displacement about the pivot as the side rails are moved into abutting contact. The rails are then linearly translatable with the guide pin being slidable within the groove and the rails assuming a mutually coextensive position with the rungs housed therebetween. A releasable locking mechanism is adapted for securing the rails when in this folded mode; alternatively, the locking mechanism stabilizes the ladder when in an open mode.

Abstract: The ladder of the invention includes first and second upright angle members connected together for movement in a parallel, arcuate relationship between an open position and a nested position. A cam surface on one of the uprights, when the uprights are going toward nested position, bears against a notched lever mechanism including a cap pivoted on the other one of said uprights. Normally, the lever mechanism is urged by a spring into latching position. The movement of the movable upright with respect to the other upright cams the cap and lever out of the way. The first and second uprights, when nested, are in a position with a flange on one of the uprights in a notch in the lever so that the uprights are contained in nested position. There is a pull cord for releasing the lever mechanism.

Abstract: A lightweight collapsible ladder which may be secured to a structure. The ladder includes two parallel uprights which are connected to one another by a plurality of pivotally mounted rungs, and is movable from a closed position in which the uprights abut one another to an open position in which the uprights are apart and the rungs are horizontal. Support devices are provided for supporting the ladder in its open position. A locking device is mounted on the ladder for holding the ladder in its closed position. The rungs are arranged in two adjacent vertical planes, every other rung located in one of the vertical planes and alternate rungs positioned in the other vertical plane.

Abstract: A pair of upstanding elongated side rails are provided and interconnected by a plurality of vertically spaced horizontal elongated rungs extending therebetween and pivotally attached at their opposite ends to the corresponding side rails whereby a foldable parallelogram construction is provided. One of the side rails includes anchor structure for anchoring the one side rail in an upright position relative to a suitable support structure and the assembly is foldable between a first closed position with the side rails closely adjacent each other and the rungs generally paralleling the side rails and a second open position with the side rails spaced apart and the rungs generally horizontally disposed.

Abstract: A folding fire escape ladder has a first upright, L-shaped in transverse cross-section, as well as a second upright, similarly shaped. The uprights are joined for movement into and out of nested position by parallel, cross rungs of flat material journalled at their opposite ends on pins projecting from the uprights. Stops on at least one upright engage and limit the movement of the rungs. A latch lever has a notch corner adapted to engage one of the uprights when the latch lever is hooked onto the other upright. A spring urges the latch lever into such engagement except when the notch corner cams the latch lever out of engaging position. A hood on the latch lever normally overlies the upper ends of the uprights. Each rung has elongated grooves in its opposite sides occupied by facing beads on treads of inverted U-shape in cross-section. A crank lever is journalled in one of the uprights and when rotated presses a cam on the lever against the other upright to spread the uprights apart.

Abstract: An escape ladder including a plurality of cross-pieces or rungs extending in parallelism between and pivotally connected to a pair of side pieces or rails for parallel movement of the latter between an open spaced operative ladder condition and a closed condition with the rungs concealed within the side pieces, at least one side piece being detachably pivotally mounted to a building for use therewith and removal therefrom.

Abstract: A foldable ladder is disclosed having a central and two outer parallel support members or "stiles" and a plurality of steps connected between the central and the outer stiles. Each step is arranged to fold between an erected position, in which it extends generally at right angles to the longitudinal direction of the stile to which it is connected, and a storage position in which the step lies generally parallel to the central stile with the outer stile to which it is connected extending parallel to and in close juxtaposition with the central stile. Engaging means are provided adjacent the upper end of the central stile for holding cooperating engaging means of a supporting membersuch as another ladder section (forming an extension ladder) or a prop extending to ground (forming a step ladder).