Ladder incorporating a through and seat mechanism

Abstract

The present invention provides ladder traversal and stand-off mechanisms, ladders incorporating the mechanisms, and related methods. A ladder and ladder accessories are provided, including accessories that can be coupled to the ladder in a variety of configurations and used for a variety of purposes. In one embodiment, a pair of members are each selectively coupled with an associated rail of a ladder in a first stowed condition and a second traversal condition. When in the traversal condition, the members extend upwardly from and above the rail so that a user can grasp the members and walk therebetween when transitioning from the ladder to an elevated surface (e.g., a roof) or from the elevated surface to the ladder. In another embodiment, the members can be coupled to the ladder so that they extend in a direction generally transverse to a plane through which the rail extends. When in this transverse orientation, the members can be used as stand-off devices.

Description

[0001] This application is a divisional application of Chinese Application No. 201880072012.1, filed November 9, 2018, entitled "WALKTHROUGH AND STANDOFF MECHANISMS FOR LADDERS, LADDERS INCORPORATING SAME AND RELATED METHODS."

[0002] CROSS-REFERENCE TO RELATED APPLICATIONS

[0003] This application claims the benefit of U.S. Provisional Patent Application No. 62 / 584,279, filed November 10, 2017, entitled "WALKTHROUGH AND STANDOFF MECHANISMS FOR LADDERS, LADDERS INCORPORATING SAME AND RELATED METHODS," the disclosure of which is incorporated herein by reference. TECHNICAL FIELD

[0004] The present invention relates to walkthrough and standoff mechanisms for ladders, ladders incorporating same and related methods. BACKGROUND

[0005] Ladders are commonly used to provide improved access for their users to locations that would otherwise be inaccessible. Ladders come in a variety of shapes and sizes, such as straight ladders, straight extension ladders, articulated ladders, and combinations of articulated and extension ladders (herein referred to as combination ladders). Combination ladders combine many of the advantages of other ladder designs in a single ladder, as they can be used as an adjustable articulated ladder or an extension ladder.

[0006] Ladders are a common tool for professional tradesmen and homeowners. At times, using a ladder can be an awkward experience, even for those who use ladders frequently, when standing on the rungs of the ladder to perform certain tasks. For example, when working at heights (e.g., painting a ceiling, changing a light bulb, etc.), it can be easy to lose one's balance on the ladder.

[0007] At times, a ladder can be unstable, or at least feel unstable, when it is leaning against an edge of a roof (e.g., a gutter positioned against the edge of a roof) and supported by that edge, particularly in situations where the user extends beyond the side rails of the ladder while working, thereby changing the load dynamics experienced by the ladder. Thus, at times, it is desirable to provide additional stability when a ladder is leaning against a support surface (wall, edge of a roof, etc.).

[0008] Another difficulty in using ladders includes dismounting from the upper portion of the ladder onto another surface. For example, when using an extension ladder, a straight ladder, or an articulated ladder to access a roof, the transition from the ladder to the roof (and from the roof to the ladder) can present the possibility of slipping, stumbling, and serious injury. Accordingly, it is sometimes desirable to provide a so-called walk-through device to provide a structure that a user can grasp or otherwise interact with to provide stability during such transitions.

[0009] While various accessories or "add-on" features can help provide increased stability and safety, if a ladder is loaded with too many accessories, it can become too heavy to maneuver, and difficult to store and transport. Accordingly, in some situations, a user would prefer to work without accessories or features that would otherwise provide increased stability or safety during use of the ladder.

[0010] There is a continuing desire within the industry to improve various aspects of ladders, including the safety, functionality, ergonomics, and efficiency of use of ladders. SUMMARY

[0011] The present disclosure provides embodiments of ladders and ladder accessories. The ladders and accessories can be deployed in any of a number of selected configurations, including, for example, a walk-through configuration, a stand configuration, or a storage configuration.

[0012] In one embodiment, a ladder is provided, the ladder comprising a first rail assembly comprising a first pair of rails and a first plurality of rungs coupled to the first pair of rails; a second rail assembly comprising a second pair of rails and a second plurality of rungs coupled to the second pair of rails; a pair of hinges rotatably coupling the first rail assembly with the second rail assembly; at least one bracket positioned on a laterally outer surface of a first rail of the first pair of rails; at least another bracket positioned on a laterally outer surface of a second rail of the first pair of rails; a first member releasably coupled with the at least one bracket in at least two different positions including a storage position and a walk-through position; a second member releasably coupled with the at least another bracket in at least two different positions including a storage position and a walk-through position.

[0013] In one embodiment, the ladder further comprises at least one cross-bracket coupled to at least one of the first rails and the second rails.

[0014] In one embodiment, the first member is configured for releasable coupling with the at least one cross-bracket, and the second member is configured for releasable coupling with the at least one cross-bracket.

[0015] In one embodiment, the ladder further comprises a coupling member that extends between the first member and the second member when the first member is coupled with the at least one lateral support and when the second member is coupled with the at least one lateral support.

[0016] In one embodiment, the coupling member is a v-shaped member.

[0017] In one embodiment, the first member extends generally transverse to a plane in which the first rail and the second rail extend when the first member is coupled with the at least one lateral support.

[0018] In one embodiment, the first member and the second member each comprise an end cap having an engagement surface.

[0019] In one embodiment, the first member and the second member each comprise a first arm and a second arm telescopically coupled with the first arm.

[0020] In one embodiment, the first member and the second member each comprise an engagement member pivotally coupled with the second arm, the engagement member selectively locked in two different positions relative to the second arm.

[0021] In one embodiment, the first member and the second member each have a length extending in a common plane with the first rail and the second rail, regardless of whether the first member and the second member are in their respective first position or second position.

[0022] In one embodiment, the ladder further comprises a locking pin coupled with the first member and configured to engage a first opening formed in the first rail or at least one of the at least one support when the rails are in the first position.

[0023] In one embodiment, the ladder further comprises a biasing member configured to bias the locking pin to engage the first opening.

[0024] In one embodiment, the ladder further comprises a pair of actuator members pivotally coupled with the locking pin.

[0025] In one embodiment, the pair of actuator members comprises a first member positioned on a first side of an arm of the first member and a second member positioned on an opposite side of the arm of the first member, wherein the free end of the locking pin is retracted relative to the at least one support when the first actuator member and the second actuator member are displaced toward one another.

[0026] In one embodiment, the first assembly comprises a first pair of inner rails slidably coupled with the first pair of rails, and wherein the second assembly comprises a second pair of inner rails slidably coupled with the second pair of rails.

[0027] In one embodiment, the ladder further includes a third plurality of rungs coupled between the first pair of inner rails and a fourth plurality of rungs coupled between the second pair of inner rails.

[0028] According to another embodiment of the disclosure, a fitting for a ladder is provided. The fitting includes at least one arm, at least one bracket coupled with the at least one arm, and a locking mechanism associated with the at least one bracket. The locking mechanism includes a first actuation member positioned on a first side of the at least one arm, a second actuation member positioned on a second, opposite side of the at least one arm, a locking pin pivotally coupled with the first and second actuation members and extending through first and second portions of the at least one arm, and a biasing member positioned around a portion of the locking pin and biasing the locking pin in a first direction, wherein the locking pin is displaced in a second direction opposite the first direction when the first and second actuation members are displaced toward one another.

[0029] In one embodiment, the at least one arm includes a first arm and a second arm telescopically coupled with the first arm.

[0030] In one embodiment, the ladder further includes an engagement member pivotally coupled with the at least one arm.

[0031] In one embodiment, the ladder further includes a second locking mechanism configured to selectively lock the engagement member in a first position and at least a second position relative to the at least one arm.

[0032] In one embodiment, the engagement member extends longitudinally outward from the at least one arm when in the first position and extends at an angle of substantially 90 degrees relative to a length of the at least one arm when in the at least second position.

[0033] Features, components, and aspects of one embodiment can be combined with features, components, and aspects of any other embodiment without limitation. BRIEF DESCRIPTION OF DRAWINGS

[0034] The foregoing and other advantages of the application will become apparent upon reading the following detailed description and upon referring to the drawings in which:

[0035] Figure 1 is a perspective view of a ladder and associated components in accordance with an embodiment of the disclosure in a ladder configuration;

[0036] Figure 2 is a perspective view of the ladder shown in Figure 1 in a stair configuration;

[0037] Figure 3 is Figure 1 a front view of a portion of the ladder shown in

[0038] Figures 4A-4C shows Figure 1 a portion of the ladder shown in

[0039] Figure 5A and 5B depicts Figure 1 a view of a portion of the ladder shown in

[0040] Figures 6A-6C depicts Figure 1 a view of a portion of the ladder shown in

[0041] Figure 7 is a front view of a portion of a ladder and an attached fitting according to an embodiment of the invention;

[0042] Figure 8 is Figure 7 a front view of a portion of the ladder shown in

[0043] Figure 9A and Figure 9B shows Figure 7 a front view of the portion of the ladder shown in Figure 9C is Figure 9A a top view of the portion of the ladder shown in

[0044] Figure 10A is a perspective view of a fitting according to an embodiment of the disclosure, Figure 10B is Figure 10A an exploded view of the fitting shown in

[0045] Figure 11A and 11B is a partial cross-sectional view of a mechanism associated with Figure 10A and Figure 10B the fitting shown in

[0046] Figure 12A and Figure 12B is an end view of another mechanism associated with Figure 10A and Figure 10B the fitting shown in DETAILED DESCRIPTION

[0047] Reference is made toFigure 1 and Figure 2 a combination ladder 100 is shown. Figure 1 ladder 100 is shown in a live ladder configuration, while Figure 2 ladder 100 is shown in an extension ladder configuration. The combination ladder 100 includes a first rail assembly 102 that includes an inner assembly 102A that is slidably coupled with an outer assembly 102B. The inner assembly 102A includes a pair of spaced apart rails 104 that are coupled with a plurality of rungs 106. Likewise, the outer assembly 102B includes a pair of spaced apart rails 108 that are coupled to a plurality of rungs 110. The rails 104 of the inner assembly 102A are slidably coupled with the rails 106 of the outer assembly 102B. The inner assembly 102A and the outer assembly 102B can be selectively locked relative to one another such that one or more of their respective rungs 106 and 110 are aligned with one another. A locking mechanism 112 can be configured to engage a portion of the inner rail assembly 102A and the outer rail assembly 102B in order to selectively lock the two assemblies relative to one another. Although a single locking mechanism 112 is shown in the views of the ladder represented in FIGS. 1-3, a second similar locking mechanism is coupled to the other side of the rail assembly 102, as will be noted in subsequent figures. Figure 1 and Figure 2 a single locking mechanism 112 is shown in the views of the ladder represented in FIGS. 1-3, a second similar locking mechanism is coupled to the other side of the rail assembly 102, as will be noted in subsequent figures.

[0048] The combination ladder 100 also includes a second rail assembly 114 that includes an inner assembly 114A that is slidably coupled with an outer assembly 114B. The inner assembly 114A includes a pair of rails 116 that are coupled with a plurality of rungs 118 and are configured similar to the inner assembly 102A of the first rail assembly 102 described above. Likewise, the outer assembly 114B includes a pair of rails 120 that are coupled with a plurality of rungs 122 and are configured similar to the outer assembly 102B of the first rail assembly 102 described above. A locking mechanism 124 can be associated with the inner assembly 114A and the outer assembly 114B to enable selective positioning of the inner assembly 114A relative to the outer assembly 114B, as described above with respect to the first rail assembly 102.

[0049] Some examples of locking mechanisms that can be used with the first and second rail assemblies 102 and 114 are described in U.S. Patent No. 8,186,481, issued May 29, 2012 (the ‘481 patent) and U.S. Patent Application Publication No. 20170254145, published September 7, 2017, the disclosures of which are incorporated by reference herein in their entireties. While the locking mechanisms described in the ‘481 patent are generally described in connection with embodiments of an adjustable loft ladder, such locking mechanisms can also be readily used with embodiments of a combination ladder such as presently described. It is additionally noted that in one embodiment, the rail assemblies 102 and 114 can be configured similar to those described in U.S. Patent No. 4,210,224 to Kummerlin, the disclosure of which is incorporated by reference herein in its entirety.

[0050] The first and second rail assemblies 102 and 114 can be coupled to one another by a pair of hinge mechanisms 126. Each hinge mechanism 126 can include a first hinge component coupled with the rails of the inner assembly 102A of the first rail assembly and a second hinge component coupled with the rails of the inner assembly 114A of the second rail assembly. The hinge components of the pair of hinges 126 rotate about a pivot member such that the first and second rail assemblies 102 and 114 can be pivoted relative to one another. Further, the hinge mechanisms 126 can be configured to lock their respective hinge components (and thus the associated rails to which they are coupled) at a desired angle relative to one another. One example of a suitable hinge mechanism is described in U.S. Patent 4,407,045 to Boothe, the disclosure of which is incorporated by reference herein in its entirety. Other examples of hinges and hinge mechanisms are described in U.S. Patent No. 7,364,017, issued April 29, 2008, and U.S. Patent Application Publication No. 20170356244, published December 14, 2017, the disclosures of which are incorporated by reference herein in their entireties. Of course, other configurations of hinge mechanisms can also be contemplated as would be understood by one of ordinary skill in the art

[0051] The combination ladder 100 is configured to assume a variety of states or configurations. For example, the rail assemblies (102 or 114) are adjusted using the locking mechanisms (112 or 124) to enable the ladder 100 to be adjusted in height. More specifically, considering the first rail assembly 102, when the rail assembly 102 is adjusted, the associated locking mechanisms 112 engage the inner and outer assemblies (102A and 102B) when the inner and outer assemblies (102A and 102B) are in a desired relative position with the rungs (106 and 110) of the inner and outer assemblies (102A and 102B) at a desired vertical spacing relative to one another, with the outer assembly 102B displaced relative to the inner assembly 102A. At some of the height-adjusted positions of the rail assembly 102, at least some of their respective rungs (106 and 110) are aligned with one another (as shown in Figure 1 FIG. 2). The second rail assembly 114 can be adjusted in a similar manner, but independently of the first rail assembly 102.

[0052] Considering the embodiment shown in Figure 1 FIG. 2, the adjustment of the rail assemblies 102 and 114 enables the ladder 100 to be configured as a live ladder with, for example, four active rungs at a desired height (as shown in Figure 1 FIG. 2), or as a significantly taller live ladder with five, six, seven, or eight active rungs, depending on the relative positioning of the inner and outer assemblies. Note, however, that the inner and outer rail assemblies can be configured with more or fewer than four rungs. Also note that the first rail assembly 102 and the second rail assembly 114 are not necessarily adjusted to similar heights (i.e., have the same number of active rungs). Rather, if the ladder is used on an uneven surface (e.g., on stairs), the first rail assembly 102 can be adjusted to one height, while the second rail assembly 114 can be adjusted to a different height to compensate for the slope of the supporting surface.

[0053] Furthermore, the hinge mechanism 126 provides additional adjustability to the ladder 100. For example, the hinge pair 126 enables the first rail assembly 102 and the second rail assembly 114 to be adjusted to various angles relative to one another. As shown in Figure 1 FIG. 2, the first rail assembly 102 and the second rail assembly 114 can be configured at an acute angle relative to one another, such that the ladder can be used as a self-supporting ladder, similar to a live ladder. However, the first rail assembly 102 and the second rail assembly 114 can be rotated or pivoted about the hinge mechanism 126 such that they extend from one another in approximately the same plane (i.e., assume an approximately 180° angle), with the hinge mechanism 126 locking them in place as shown in Figure 2The orientation shown is such that ladder 100 can be used as a telescopic ladder when constructed in this manner. Furthermore, in this configuration, each of the first component 102 and the second component 114 remains height-adjustable (i.e., by the relative displacement of their respective inner and outer components). It should also be noted that the rungs of the various components (i.e., rungs 106, 110, 118, and 122) are constructed to have supporting surfaces at both their top and bottom, enabling them to be used in either a live ladder or telescopic ladder configuration.

[0054] The ladder 100 may additionally include feet 130 that are coupled to the lower portions of the outer guide rails 108 and 120 of the first component 102 and the second component 104. Feet or other structures may also be coupled to the inner guide rails 104 and 116 of the first component 102 and the second component 104. In some embodiments, wheels 132 may be coupled to one of the components (e.g., the outer guide rail 108 of the first component) for transporting the ladder (e.g., by tipping the ladder 100 so that the wheels 132 engage the ground and roll the ladder between multiple locations). When the ladder 100 is in an available configuration, such as... Figure 1 The ladder shown Figure 2 The telescopic ladder shown has wheels 132 that do not contact the ground or supporting surface. Some non-limiting examples of the feet 130 and wheels are described in U.S. Patent No. 9,016,434, issued April 28, 2015, the disclosure of which is incorporated herein by reference in its entirety.

[0055] like Figures 1-3 As shown ( Figure 3 (A portion of the external component 102 is shown). The ladder 100 also includes components commonly referred to herein as stabilizers. As will be discussed below, the stabilizer may take the form of a walkway or it may take the form of a support device. When not in use, the various components 140A and 140B forming the stabilizer can be disposed of as follows: Figure 1 and Figure 2 The storage configuration shown is connected to a guide rail (e.g., guide rail 108) of one of the components, thereby keeping the stabilizer components in a convenient and easily accessible position while avoiding interference with any normal use of the ladder 100.

[0056] In one embodiment, components 140A and 140B can be removably coupled to the guide rail 108 via a bracket 142 coupled to the guide rail 108 and a mating bracket 144 coupled to components 140A and 140B. Each component 140A and 140B may also include a locking pin 146 that engages an opening in the associated guide rail 108 to hold component 140A or 140B in a locked position relative to its associated guide rail 108. For example, in the case of locking pin 146 as...Figure 3 In the engagement shown, components 140A and 140B remain in the stored state. However, when the locking pin 146 retracts, components 140A and 140B can slide in a direction generally parallel to the length of the guide rail 108 until the brackets 142 and 144 are released from each other and components 140A and 140B are separated from the guide rail 108.

[0057] like Figure 3 As shown, components 140A and 140B can be telescopic, allowing them to extend in length. Therefore, components 140A and 140B can include, for example, an outer member 150 and an inner member 152 that are slidably connected to each other (see example...). Figure 5A The outer member 150 may include a plurality of openings 156 configured for alignment with a spring-biased button 158 or other locking mechanism. When a change in the length of members 140A and 140B is required, the button 158 can be pressed down such that it no longer engages or otherwise interferes with the aligned opening 156, and the inner member 152 can then slide relative to the outer member 150 to change the length of the mechanism. The button 158 can then be aligned with another aligned opening 156 and (due to its spring bias) extend through said other aligned opening 156, thereby locking the outer member 150 and the inner member 152 relative to each other.

[0058] like Figure 4A and Figure 4B As shown, locking pin 146 may extend through a portion of component 140A and align with opening 160 in guide rail 108. Spring 162 or other biasing member may be associated with locking pin 146 (e.g., within component 140A), thereby biasing locking pin 146 to engage with any opening in guide rail 108. As described above, as locking pin 146 retracts, component 140A can be separated from ladder rail 108 by sliding along the length of guide rail 108. When it is desired to connect the component to guide rail 108, or for storage or for use as a walkway stabilizer (e.g., as... Figure 4C , Figure 5A and Figure 5B As shown in the diagram, brackets 142 and 144 can be aligned, and component 140A can be displaced such that the brackets engage with each other until locking pin 146 engages the appropriate opening (e.g., opening 160) and locks component 140A in place relative to guide rail 108.

[0059] Figure 5AA portion of the ladder 100 is depicted with one of the components 140A ready to be attached to its associated rail 108 (or, alternatively, immediately after being removed from the rail 108), and the other component 140B shown attached in a configuration in which it can be used as a walkthrough stabilizer. Figure 5A The components 140A and 140B are also shown in an extended state (at least partially), with the inner member 152 extending from the outer member 150 to provide additional length or height to the components 140A and 140B.

[0060] Figure 5B The components 140A and 140B are shown in a walkthrough configuration, with the components 140A and 140B coupled with the rails 108 and extending upward beyond the foot portions 130 of the rails 108. With the components in this configuration, a user can climb onto the ladder 100, step onto a roof or other structure from the uppermost rung 110, pass between the components 140A and 140B while grasping the components 140A and 140B for stability and safety purposes. Likewise, when transitioning back onto the ladder 100 from the roof or other structure, the user can grasp the components 140A and 140B and pass between them. In one embodiment, the components 140A and 140B can extend generally parallel to their associated rails 108. In another embodiment, the components 140A and 140B can include curved portions to position them closer to one another and thereby provide a reduced walkthrough space in width. In some embodiments, the components 140A and 140B can extend in a plane common to the rails 108 when in the walkthrough configuration. In some embodiments, additional features or structures can be associated with the components 140A and 140B, including, for example, handles, non-slip portions for the user to grasp, etc.

[0061] Reference is now made to Figure 6A and Figure 6BThe diagram illustrates a ladder 100, with components 140A and 140B connected to a guide rail 108 in a support configuration. When connected in the support configuration, one of the supports 144 of each of components 140A and 140B can be connected to an associated support 170 located on the front side or front surface of the associated guide rail 108. The front support 170 (sometimes referred to herein as a transverse support) can be oriented at an angle such that, when connected thereto, components 140A and 140B extend rearward in a plane generally transverse to the plane in which the guide rail 108 extends. Additionally, in this configuration, the distal ends 172 of components 140A and 140B are positioned rearward of the ladder 100 such that when the ladder is positioned against an upper supporting surface or structure (e.g., a wall, roof edge, etc.), the distal ends 172 of components 140A and 140B contact the supporting structure, while the remainder of the ladder 100 (e.g., the guide rail 108) remains spaced apart from the supporting structure. With components 140A and 140B in a support configuration, the ladder 100 can be further stabilized by abutting against the upper support structure at a wider contact point. This configuration also helps to avoid potential damage to parts of the support structure. For example, using a support stabilizer helps to prevent the ladder rails from applying inappropriate forces to structures such as gutters, windows, or other structures.

[0062] When components 140A and 140B are assembled in a support configuration, the third V-shaped component 180 can be used to connect their respective proximal ends 182. For example, the proximal end 182 may include a spring-biased button 184 or other locking mechanism configured to extend through a corresponding opening 186 formed in the third component 180, as is possible. Figure 6B As is most clearly seen here. During assembly, with button 184 engaging with and extending through opening 186, and with other components 140A and 140B angledly connected to the front side of guide rail 108, the support assembly is locked in place so that components 140A and 140B do not slip off their respective supports 170. Similarly, the lengths of components 140A and 140B can be telescopically adjusted if needed, thus providing the ability to customize the support width and depth.

[0063] Components 140A and 140B can include additional features that function as a standoff device. For example, caps 190 or other devices can be coupled with them at or near distal ends 172 of components 140A and 140B. These caps 190 can include scratch-resistant, mark-free materials so that when they engage an upper support structure (e.g., a wall panel or plaster of a wall), they are less likely to leave marks or damage the support structure in any way. Furthermore, caps 190 or other features can include non-slip portions to help provide traction between components 140A and 140B and the support structure, thereby helping to keep the ladder more stable during use. In one embodiment, caps 190 can include engagement surfaces 192 that are oriented at an angle relative to the length or longitudinal axis of components 140A and 140B so that they are generally parallel to the intended engagement surface. In other words, the engagement surface or a major portion thereof can extend in a plane that is generally parallel to the plane in which rails 108 extend.

[0064] It is noted that in other embodiments, the bracket 170 to which components 140A and 140B are coupled can be located on the rear surface of rails 108 so that components 140A and 140B can be positioned on the rear side of ladder 100. However, coupling the standoff device with the front side of the ladder can provide some benefits, such as facilitating assembly by the user while also serving as a natural barrier to prevent the user from climbing beyond a desired height on the ladder. Furthermore, it is noted that bracket 170 is positioned near the topmost rung 110 (in the orientation shown in Figures 6A-6C ), and even slightly above it. However, in other embodiments, the bracket can be positioned at other locations along the length of rails 108, or there can be multiple brackets along the front (or rear) side of the rails so that the user can customize the position of the standoff device.

[0065] Reference is now made to Figure 7 , the top of ladder 100 (e.g., outer assembly 102B of first assembly 102) is shown with another stabilizer assembly including first component 200A and second component 200B. As discussed previously, the stabilizer can take the form of a walkthrough device, or it can take the form of a standoff device. When not in use, the individual components 200A and 200B that form the stabilizer can be coupled with the rails (e.g., rails 108) of one of the assemblies in a stowed state as shown in Figure 7 , thereby keeping the components of the stabilizer in a convenient and easily accessible location while avoiding interfering with any normal use of ladder 100.

[0066] In one embodiment, components 200A and 200B can be removably coupled to the guide rail 108 via a bracket 202 coupled to the guide rail 108 and a mating bracket 204 coupled to components 200A and 200B. Each component 200A and 200B may also include a locking mechanism 206 configured to lock component 200A or 200B to its associated guide rail 108 or other component, as discussed below. In some embodiments, the bracket 204 coupled to components 200A and 200B may be at least partially integrated into the locking mechanism 206, as discussed further below. When components 200A and 200B are coupled to the guide rail 108 and the locking mechanism 206 is not actuated, components 200A and 200B are locked in a storage configuration, such as... Figure 7 As shown, this prevents them from moving relative to their associated guide rail 108. However, when the locking mechanism is actuated, components 200A and 200B can slide in a direction generally parallel to the length of the guide rail 108 until brackets 202 and 204 are released from each other and components 200A and 200B are separated from the guide rail 108. The locking mechanism 206 and its operation will be discussed in further detail below.

[0067] refer to Figure 8 Components 200A and 200B are shown in a through-type configuration, wherein components 200A and 200B are coupled to guide rail 108 and extend upward beyond the foot 130 of guide rail 108. Components 200A and 200B can be placed in this configuration by removing components 200A and 200B from their storage configuration (e.g., ...). Figure 7 Released from the ladder 100 (as shown), components 200A and 200B are reversed in orientation relative to their guide rails 108, and then brackets 204 and 202 are slidably reconnected to each other until locking mechanism 206 locks components 200A and 200B relative to guide rails 108. With components 200A and 200B in this configuration, a user can climb ladder 100 and step onto the roof or other structure from the top rung 110, thus passing between components 200A and 200B while gripping them for stability and safety. Similarly, when transitioning back to ladder 100 from the roof or other structure, the user can grip components 200A and 200B and pass between them.

[0068] In one embodiment, the components 200A and 200B can extend generally parallel to their associated rails 108, or at least relative to the portions of the rails 108 to which the components 200A and 200B are attached (e.g., the flared or beveled portions of the rails 108). In another embodiment, the components 200A and 200B can include curved portions to position them closer to one another and thereby provide a reduced width of the walk-through space. In some embodiments, the components 200A and 200B can extend in a plane common with the rails 108 when in the walk-through configuration. In some embodiments, additional features or structures can be associated with the components 200A and 200B, including, for example, handles, non-slip portions for a user to grasp, etc.

[0069] Referring now to Figures 9A-9C , an upper portion of the ladder 100 is shown with the components 200A and 200B in the stand configuration. When connected in the stand configuration, the braces 204 of each of the components 200A and 200B can slidingly engage or otherwise be coupled with an associated brace 210 (which can also be referred to as a cross brace) located on the rear side of the ladder assembly 102. In some embodiments, the rear braces 210 can be configured as or otherwise coupled to strut members that extend between and couple with the outer rails 108. In some embodiments, as shown in Figure 9A and Figure 9B , the braces 210 can be located at a height that generally corresponds to the height of the uppermost rung.

[0070] Further, in this configuration, the engagement members 212 located at the laterally outer ends of the components 200A and 200B are pivotally rotated relative to the main arms 214 (which can include first arm members 220 and second arm members 222, as described below) of the components 200A and 200B such that the engagement surfaces 216 of each engagement member 212 are positioned at the rear or back of the ladder 100. Thus, when the ladder 100 is positioned against an upper support surface or structure (e.g., a wall, a roof edge, etc.), the engagement members 212 contact the support structure while the remainder of the ladder 100 (e.g., the rails 108) remains spaced apart from the support structure by a desired distance. As with other embodiments, the engagement members 212 can include or incorporate a scratch-resistant, mark-free material such that they are less likely to leave marks or damage the support structure in any way when they are engaged with an upper support structure (e.g., a wallboard or plaster of a wall). Further, the caps 190 or other features can include non-slip portions to help provide traction between the components 140A and 140B and the support structure to help keep the ladder more stable during use.

[0071] With components 200A and 200B in a support configuration, the ladder 100 can be further stabilized by abutting against the upper support structure at a wider contact point. This configuration also helps to avoid potential damage to parts of the support structure. For example, using a support stabilizer helps to prevent the ladder rails from applying inappropriate forces to structures such as gutters, windows, or other structures.

[0072] Compare Figure 9A and Figure 9B As can be seen, the main shaft 214 of each component 200A and 200B can be telescopically extended, allowing the connecting members to be placed at various widths, depending on, for example, the location where the ladder will be deployed and the available space for the components to extend laterally outward from the guide rail 108 of the ladder 100. The telescopic movement of components 200A and 200B can be accomplished in the manner described above, or as follows regarding... Figures 10A-11B Complete it as discussed.

[0073] refer to Figure 10A and 10B The component 200A according to an embodiment of the present disclosure is shown. Figure 10B It is an exploded diagram). Note that, although Figure 10A and 10B Part 200A is shown, but part 200B can be configured to relate to... Figure 10A and Figure 10B The parts shown and described are identical, or at least constructed as mirror images of them.

[0074] Component 200A includes a pair of shaft or arm members 220 and 222 that are telescopically connected to each other (e.g., where the second arm 222 has a smaller cross-sectional area than the first arm 220 and is slidably fitted inside the first arm 220). A pair of bushings or spacers 224 and 226 may be coupled between the two arm members 220 and 222 to accommodate the telescopic arrangement of the two arms 220 and 222. An arm locking assembly 226 may be coupled to one or both of the arms 220 and 222 to lock the two arms relative to each other in a desired position.

[0075] For example, such as Figure 11A and Figure 11B As shown, the arm locking assembly 226 may include a sleeve or bracket 228 coupled to the first arm 220, and a lever 230 coupled to the bracket 228 via a pivoting member 232. Figure 11A As shown, when aligned with the opening 234 of the first arm 220, the engaging pin 234, connected to the lever 230, can pass through the opening 236 formed in the first arm 220 and enter one of the openings 238A-238D formed in the second arm 222. Figure 11AAs shown in FIG. 2, when the engagement pin is positioned such that it passes through two aligned openings (e.g., 234 and 238B), the two arms are locked in their positions relative to each other.

[0076] When the lever 230 is pivoted such that the engagement pin is retracted from the opening (e.g., opening 236B) in the second arm 222, as shown in FIG. 2B, then the two arms 220 and 222 can slide relative to each other to change the length of the component 200A. When other openings are aligned with the opening 236 of the first arm 220, the engagement pin 234 can engage any one of the other openings (e.g., 238A, 238C, or 238D) in order to lock the two arms at the desired length. Note that while four different openings 238A-D are shown in the second arm, this embodiment is merely exemplary and more or fewer openings can be provided in order to provide the desired level of adjustment for the arms. Figure 11B Figure 11A and Figure 11B While four different openings 238A-D are shown in the second arm, this embodiment is merely exemplary and more or fewer openings can be provided in order to provide the desired level of adjustment for the arms. Note also that the lever 230 can be biased to engage with the aligned openings such that when the user releases the lever 230, the engagement member contacts the surface of the second arm until the openings 238A-D of the second arm 222 are aligned with the opening 236 of the first arm, at which point the lever rotates due to the biasing force applied thereto to engage with the aligned openings 238A-D of the second arm. Such a biasing force can be provided, for example, by a suitable spring member positioned between the lever 230 and the bracket 228.

[0077] Returning to Figure 10A and Figure 10B As discussed previously, the component 200A also includes an engagement member 212 that is pivotable between a plurality of positions including a first position in which the engagement member 212 extends longitudinally from the second arm 222 (e.g., generally aligned with the length or longitudinal axis of the second arm 214), and at least a second position in which the engagement member 212 extends at an angle (e.g., an obtuse angle, a right angle, or an acute angle) relative to the length of the second arm 222. A locking mechanism 240 can be used to selectively lock the engagement member 212 at a given position relative to the second arm 222. In one embodiment, the locking mechanism 240 can include a U-shaped spring 242 or other biasing member that biases a pair of buttons 244 against each other along a common axis. When the apertures or openings 248A and 248B are aligned with the opening 246 of the second arm 222, the buttons can extend through the apertures or openings 246 in the second arm 222 and into the apertures or openings 248A and 248B. The engagement member 212 can be pivotally coupled to the second arm 222 via a pivot member 250 (e.g., a pin, shaft, or fastener) such that it can be pivoted between its various positions relative to the second arm 222.

[0078] ​As noted above, component 200A may also include a bracket 202 for connecting component 200A to ladder 100. In one embodiment, bracket 204 may include a plurality of bracket members 204A-204C aligned along the length of the first arm 220. In one embodiment, one of the bracket members (e.g., 204B) may also serve as a cover for locking mechanism 206, positioned on actuator member 250 (also referred to as a squeeze handle) of locking mechanism 206. Bracket 202 may be constructed with grooves or slots that are designed and sized to receive portions of a matching bracket (e.g., bracket 202 or 210) of corresponding shape and size, as discussed above.

[0079] In one embodiment, the locking mechanism 206 may be configured as a compression mechanism having a pair of actuator members 250 hingedly connected via a spring pin or hinge pin 252. The locking mechanism 206 may also include an engagement pin or locking pin 254 coupled to the spring pin 252, and a biasing member, such as a helical spring 256, configured to radially bias the locking pin 254 through an opening 258 formed in the first arm 220 (and a corresponding opening formed in any support member (e.g., support member 204B) positioned adjacent to the opening 258).

[0080] like Figure 12A and Figure 12B As shown, locking pin 254 extends through the opposite side of first arm 220 and is pivotally or hingedly connected to actuator member 250 via spring pin 252. Spring 256 may be positioned about a portion of locking pin 254 and is configured to abut against shoulder 260 of engagement pin at one end and against inner surface of first arm 220 at the other end. Figure 12A As shown, when in the unactuated state, the spring 256 biases the locking pin 254 upward, causing the free end 262 to extend through the wall of the first arm 220, beyond the surface of the support member 204B, and into the opening of the corresponding support member (e.g., support 202 or 210), as shown by... Figure 12A and Figure 12B As shown by the dotted lines in the diagram. The engagement of the locking pin 254 with the opening of the associated bracket (e.g., 202 or 210) locks the component 200 in the desired position.

[0081] like Figure 12BAs shown in FIG. 20, when the actuator member 250 is squeezed toward one another, the displacement of the actuator member 250 causes displacement of the locking pin 254 to retract the free end 262 a distance sufficient to disengage any opening in the mating bracket (e.g., 202 or 214) so that the mating brackets (e.g., 202 and 204) can slide relative to one another to remove the member 200A from the ladder 100. When the actuator member 250 is released, the spring 256 biases the locking pin 254 upward, returning the locking pin 254 and the actuator member 250 to their unactuated positions (as shown in FIG. 21). Attaching the member 200A to the rails 108, the rear bracket 210, or other members of the ladder 100 can similarly be accomplished by squeezing the actuator member 250 of the locking mechanism 206, sliding the bracket 204 of the member 200A into sliding engagement with a mating bracket (e.g., 202 or 210), and releasing the actuation member so that the locking pin 254 extends into a mating alignment hole associated with the bracket member (202 or 210) or associated structure (e.g., the rails 108, the stile member, etc.). Figure 12A

[0082] While the application can be susceptible to various modifications and alternative forms, specific embodiments have been shown by way of example in the drawings and have been described in detail herein. However, it should be understood that the application is not intended to be limited to the particular forms disclosed. Rather, the application is to cover all modifications, equivalents, and alternatives falling within the spirit and scope of the application as defined by the following appended claims.​

Claims

1. A ladder comprising: a first assembly comprising a first pair of rails and a first plurality of rungs coupled to the first pair of rails; a second assembly comprising a second pair of rails and a second plurality of rungs coupled to the second pair of rails; a pair of hinges rotatably coupling the first assembly with the second assembly; at least one bracket positioned on a laterally outer surface of a first rail of the first pair of rails; at least another bracket positioned on a laterally outer surface of a second rail of the first pair of rails; at least one cross-bracket coupled to both the first rail and the second rail; a first member releasably directly couplable with the at least one bracket in at least two positions including a stowed position and a traversing position; a second member releasably directly couplable with the at least another bracket in at least two positions including a stowed position and a traversing position; wherein the first member is configured for releasable direct coupling with the at least one cross-bracket on the first rail to position the first member in a cross position, and the second member is configured for releasable direct coupling with the at least one cross-bracket on the second rail to position the second member in a cross position; wherein in the cross position, the first member and the second member are respectively disengaged from the at least one bracket and the at least another bracket; wherein in either of the stowed position or the traversing position, the first member and the second member are respectively disengaged from the at least one cross-bracket; and a coupling member extending between the first member and the second member when the first member is coupled with the at least one cross-bracket in the cross position and when the second member is coupled with the at least one cross-bracket in the cross position.

2. The ladder of claim 1, wherein, The coupling member is a v-shaped member.

3. The ladder of claim 1, wherein, The first member extends generally transverse to a plane in which the first and second rails extend when the first member is coupled with the at least one cross-bracket.

4. The ladder of claim 1, wherein, The first member and the second member each include an end cap having an engagement surface.

5. The ladder of claim 1, wherein, The first member and the second member each include a first arm and a second arm telescopically coupled with the first arm.

6. The ladder of claim 5, wherein, The first member and the second member each include an engagement member pivotally coupled with the second arm and selectively lockable in two different positions relative to the second arm.

7. The ladder of claim 1, wherein, Regardless of whether the first member and the second member are in their respective traversing positions or stowed positions, the first member and the second member each have a length extending in a common plane with the first rail and the second rail.

8. The ladder of claim 1, further comprising a locking pin coupled with the first component and configured to engage a first opening formed in at least one of the first rail or the at least one stile when the rail is in the transit position.

9. The ladder of claim 8, further comprising a biasing member configured to bias the locking pin to engage the first opening.

10. The ladder of claim 9, further comprising a pair of actuator members pivotally coupled with the locking pin.

11. The ladder of claim 10, wherein, the pair of actuator members including a first member positioned on a first side of an arm of the first component and a second member positioned on an opposite side of the arm of the first component, wherein when the first and second members are displaced toward one another, a free end of the locking pin is retracted relative to the at least one stile.

12. The ladder of claim 1, wherein, the first assembly including a first pair of inner rails slidably coupled with the first pair of rails, and wherein the second assembly includes a second pair of inner rails slidably coupled with the second pair of rails.

13. The ladder of claim 12, further comprising a third plurality of rungs coupled between the first pair of inner rails and a fourth plurality of rungs coupled between the second pair of inner rails.

14. A ladder, comprising: a first rail; a second rail; a plurality of rungs coupled to and extending between the first and second rails; a first stabilizer releasably couplable with the first rail via a first stile when the first stabilizer is positioned in a storage position or a transit position, and releasably couplable with the first rail via a first cross stile separate from the first stile when the first stabilizer is positioned in a cross position; and a second stabilizer releasably couplable with the second rail via a second stile when the second stabilizer is positioned in a storage position or a transit position, and releasably couplable with the first rail via a second cross stile separate from the second stile when the second stabilizer is positioned in a cross position; wherein the first and second stabilizers are lockable relative to the first and second rails, respectively, via the first and second stiles, respectively, in either of the storage or transit positions; wherein the first and second stabilizers are lockable relative to the first and second rails, respectively, in the cross position via the first and second cross stiles, respectively; wherein in the transit position, the first and second stabilizers extend upwardly beyond respective tops of the first and second rails; and wherein, in the transverse position, the first and second stabilizers extend rearward in a first plane that is generally transverse to a second plane in which the first and second rails extend.

15. The ladder of claim 14, further comprising a brace oriented parallel to the first plane and couplable with the first stabilizer when the first stabilizer is in the transverse position.

16. A ladder, comprising: a pair of spaced apart rails having end portions; a plurality of rungs coupled to the pair of spaced apart rails; a stabilizer attachment comprising a first member, a second member, a first brace, a second brace, a third brace, and a fourth brace, the first brace positioned on a laterally outer surface of a first rail of the pair of spaced apart rails, the second brace positioned on a laterally outer surface of a second rail of the pair of spaced apart rails, the third brace positioned on a front surface of the first rail, the fourth brace positioned on a front surface of the second rail; an engagement member pivotably coupled with the first member and selectively lockable in a first engagement position or a second engagement position relative to the first member via a locking mechanism; wherein the locking mechanism comprises a biased locking pin that is extendable into a first opening or a second opening to lock the engagement member in the first engagement position or the second engagement position, respectively; wherein the first and second members are lockable to the first and second braces, respectively, in a first position, wherein in the first position the first and second members are adjacent to the pair of spaced apart rails and the end portions of the pair of spaced apart rails extend beyond the first and second members; wherein the first and second members are lockable to the first and second braces, respectively, in a second position, wherein in the second position the first and second members extend beyond the end portions of the pair of spaced apart rails; and wherein the first and second members are lockable to the third and fourth braces, respectively, in a third position, wherein in the third position the first and second members extend laterally outward from the pair of spaced apart rails.

17. The ladder of claim 16, further comprising a fifth brace and a sixth brace, the fifth brace positioned on a rear surface of the first rail, the sixth brace positioned on a rear surface of the second rail, wherein, the first and second members are lockable in a fourth position in which the first and second members are positioned rearward of a plane in which the pair of spaced apart rails are positioned.

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