Attorney Docket: 21601-158719-WO Ladder with Remote Lock Actuator CROSS-REFERENCE TO RELATED APPLICATIONS [0001] This application claims the benefit of priority of U.S. Provisional Application No. 63/420,420 filed October 28, 2022, which is herein incorporated by reference in its entirety. FIELD OF THE DISCLOSURE [0002] The present disclosure relates to locks on multi-purpose ladders. More specifically, the present disclosure relates to unlocking an inner section from an outer section of a multi-purpose ladder at a height above a first rung such that the ladder length may be adjusted at a more convenient height. BACKGROUND OF THE INVENTION [0003] Ladders are used in a multitude of different ways. To avoid needing a specific type of a ladder for a specific type of job, a multi-purpose ladder may be used. The multi-purpose can be configured in different ways for different jobs in different locations. [0004] In some examples, the ladders include multiple sections, portions, and/or accessories that may be secured relative to one another. As such, securement or locking mechanisms may be employed to facilitate the securement of the various ladder portions or sections. BRIEF DESCRIPTION OF THE DRAWINGS [0005] Referring now to the drawings wherein like reference numerals refer to similar or identical parts throughout the several views, and more specifically: [0006] FIG.1 illustrates a multi-purpose ladder known in the art; [0007] FIG. 2 illustrates a multi-purpose ladder in a step-ladder configuration in accordance with various embodiments described herein; [0008] FIG. 3 illustrates portions of a locking mechanism in accordance with various embodiments described herein; Attorney Docket: 21601-158719-WO [0009] FIG. 4A illustrates an inner section of the ladder of FIG. 2 in accordance with various embodiments described herein; [0010] FIG.4B illustrates a close-up view of a portion of the inner section of FIG.3 in a locked state in accordance with various embodiments described herein; [0011] FIG. 5A illustrates an inner section of the ladder of FIG. 2 in accordance with various embodiments described herein; [0012] FIG. 5B illustrates a close-up view of a portion of the inner section of FIG.3 in an unlocked state in accordance with various embodiments described herein; [0013] FIG. 6A illustrates an inner section of the ladder of FIG. 2in accordance with various embodiments described herein; [0014] FIG. 6B illustrates a close-up view of a portion of the inner section of FIG. 5A in an unlocked state in accordance with various embodiments described herein; [0015] FIG. 6C illustrates a close-up view of a portion of the inner section of FIG. 5A in an unlocked state in accordance with various embodiments described herein; [0016] FIG. 7 illustrates portions of a locking mechanism in accordance with various embodiments described herein; [0017] FIG. 8 illustrates portions of a locking mechanism in accordance with various embodiments described herein; [0018] FIG. 9A illustrates portions a locking mechanism in accordance with various embodiments described herein; [0019] FIG. 9B illustrates the locking mechanism of FIG. 9A in an unlocked state in accordance with various embodiments described herein; [0020] FIG. 9C illustrates the locking mechanism of FIG. 9A in a locked state in accordance with various embodiments described herein; [0021] FIG. 10A illustrates portions of a locking mechanism in accordance with various embodiments described herein; and Attorney Docket: 21601-158719-WO [0022] FIG. 10B illustrates the locking mechanism of FIG. 10A in an unlocked state in accordance with various embodiments described herein. DETAILED DESCRIPTION [0023] Reconfigurable ladders, such a, e.g., multi-position) ladder or extension ladders, typically include one or more sections and/or accessories including, e.g., a first or inner section and a second or outer section. In one illustrative approach, an inner section includes a first inner rail and a second inner rail spaced apart from the first inner rail, and a plurality of inner rungs attached to the first inner rail and the second inner rail. The plurality of inner rungs including a first inner rung at a first distance from an end of the inner section. Similarly, in one illustrative approach, an outer section including a first outer rail and a second outer rail spaced apart from the first outer rail, and a plurality of outer rungs attached to the first outer rail and the second outer rail, the outer section attached to and in sliding engagement with the inner section. Additionally, in one exemplary embodiment, a locking assembly is employed to secure the portions, such as the inner and outer sections, relative to one another. Advantageously several of the locking assembly configurations described herein permit the portions or sections of the associated ladder in a variety of positions and even configurations. In one exemplary embodiment, a hinge lock is used to allow for the reconfiguration of the ladder from a step-ladder configuration to a linear configuration. [0024] In some approaches, the locking mechanism is easily and/or quickly moved from a locked position to an unlocked position. While the actuation of the locking mechanism may be manually or automatically, it is beneficial for the user to be able to efficiently adjust the ladder as many such devices are appreciated for their portability. Accordingly, users are often looking for ladders with devices or accessories that are convenient to deploy. [0025] By one approach, a locking assembly is substantially disposed within the first inner rail and the second inner rail and configured to move between a locked state and an unlocked state. Further, in some embodiments, the locking assembly includes a bolt, a cross pin extending through an opening in the bolt and disposed inside of the first inner rung, and an actuation lever attached to one of the plurality of inner rungs at a second distance from the end of the inner section, where the second distance is greater than the first distance. [0026] The ladders, components, and/or accessories described herein may be formed of a variety of materials and using a variety of manufacturing techniques. Such materials may include, Attorney Docket: 21601-158719-WO e.g., metals, plastics and other polymers, and/or composite materials. In addition, some portions of the ladder’s components may be formed of one material and one or more other components or accessories may be formed of another similar, or entirely distinct material. In some configurations, the rails of the ladders may be formed of composite material such as fiberglass or fiberglass reinforced plastic (FRP) and may be manufactured via a pultrusion process. FRP materials may include various plastic resins, such as polyurethane or polyethylene, or may include various glass materials. It is contemplated that adjusting the FRP formula to use different material combinations may reduce material weight and/or cost. The rails may also be formed of a metal material such as aluminum or aluminum alloys and manufactured via an extrusion process. After extrusion or pultrusion, the ladder rails are typically cut to length. For box-shaped rails, a computerized numerical control (CNC) machine may machine or form one or more holes in the rails. For rails of other shapes, such as C-shaped or I-beam shaped rails, other tools such as a punch press may be leveraged to punch one or more holes into the rails. [0027] The rungs of the ladders may be formed of composite materials such as fiberglass or carbon fiber. In some approaches, the rungs may also be formed of meatal materials such as magnesium, magnesium alloys, aluminum, or aluminum alloys. The rungs may be manufactured, for example, via an extrusion process and cut to length. The rungs may take a variety of shapes and may be, for example, rounded, D-shaped, or triangular. [0028] The rungs of a ladder may be attached to the rails in a variety of different manners. In one approach, the rungs and rails are forged together, such as by having the rungs being attached to the rails via a direct swage connection. In a direct swage connection, a rung is attached directly to the rails using a cold forming process, where a moving die shapes the rung around a hole that was pre-punched in the rail. Annealing operations may be used to soften the metal to prevent cracking. In other approaches, the rungs are attached to the rails via a rung-plate connection in addition to other attachment types. In a rung-plate connection, a rung is attached to a plate and the plate is attached to the rail via one or more rivets or other mechanical elements. [0029] Other accessories and assemblies employed in the ladder, such as feet, locks, ropes, rope pullies, end caps, and/or knee braces may be made of materials such as rubber or plastics like polypropylene or any other suitable plastics. Plastic parts may be injection molded or insert molded. In some approaches, accessories and assemblies such as guide brackets, feet, knee braces, Attorney Docket: 21601-158719-WO and/or locks, may be formed, extruded or stamped, from metal materials such as aluminum, aluminum alloys, or steel. Rubber feet may be riveted to a base of the ladder. Metal locks may be extruded and then cut to length. Rope pulleys may include extruded metal side portions and plastic round pulleys formed of injection molded plastic, with the side portions and pulley held together by a rivet. End caps may be riveted or snap fit to the ladder during assembly. Similarly, knee caps may be riveted to the ladder. Metal cables may be used with and in certain accessories of the ladder. [0030] The reconfigurable ladders, such as the exemplary multi-position ladder shown in the figures and described herein, include a plurality of sections. For example, one such ladder has an inner section including a first inner rail and a second inner rail spaced apart from the first inner rail, and a plurality of inner rungs attached to the first inner rail and the second inner rail. The plurality of inner rungs includes a first inner rung attached at a first distance from a first end of the first inner rail and a first end of the second inner rail and a second inner rung attached at a second distance from the first end of the first inner rail and the first end of the second inner rail. The multi- purpose ladder also typically includes an outer section having a first outer rail and a second outer rail spaced apart from the first inner rail, and a plurality of outer rungs attached to the first outer rail and the second outer rail. In addition, the outer section is generally attached to and in sliding engagement with the inner section. The reconfigurable ladders may include a first or front assembly including a first inner rail, a second inner rail, a first outer rail, and a second outer rail. Similarly, a second or rear assembly may include a first or front assembly including a first inner rail, a second inner rail, a first outer rail, and a second outer rail. The first assembly and the second assembly may be connected via a top. The top may include a hinge and a hinge lock to allow for the reconfiguration of the multi-position ladder. [0031] The multi-purpose ladder includes a locking assembly that secures the inner section and outer section relative to one another. In one illustrative configuration, the locking assembly is engaged with the first inner rung to lock the inner section with and unlock the inner section from the outer section. The multi-purpose ladder comprises a remote actuator attached to the inner section at a third distance from the first inner rung, where the third distance is greater than or equal to a difference between the first distance and the second distance. The remote actuation lever unlocking the locking assembly when actuated such that the outer section is able to move relative Attorney Docket: 21601-158719-WO to the inner section. In some embodiments, the remote actuator preferably is in direct contact with the locking assembly through a cable or rod. [0032] The locking assembly includes a first bolt which extends into a hole in the first inner rail and the first outer rail and a second bolt which extends into a hole in the second inner rail and the second outer rail when the inner section is locked with the outer section. When the remote actuator is actuated, the first bolt and the second bolt may simultaneously withdraw from the first outer rail and the second outer rail, respectively, and unlock the inner section from the outer section. The remote actuator may be attached to an inner rung of the plurality of inner rungs above the first inner rung. The first inner rung of the plurality of inner rungs may be closest to the first end of the first and second inner rails. The outer and inner sections may form a first or front assembly, and including a top with hinges, the inner section attached to the hinges, and a second or rear assembly attached to the hinges so the rear assembly is able to rotate about the top by way of the hinges relative to the front assembly. [0033] The multi-purpose ladder having the inner section, or fly section, and the outer section, or base section, are locked together using a locking mechanism comprising of bolts and pinch levers. This locking mechanism provides the ability to retract the lock bolts at a convenient point on the ladder some distance away from the locking bolts and further away from the ground. The bolt retraction user interface is at a convenient location on the ladder about shoulder height. The user would otherwise need to bend down to actuate the bolt-retracting pinch levers. [0034] Referring to FIG. 1, a known multi-position-type ladder 10, illustrated in the step- ladder configuration, includes a lock 12 disposed at the lowest inner rung is shown. The lock 12 connects to bolts which hold the outer sections in place relative to the inner sections. In use, one pinches levers to retract bolts to allow the outer section to slide relative to the inner section. Generally, a user must bend down to the lowest inner rung to actuate the pinch lock 12 and unlock the inner section from the outer section. In addition, in the step-ladder configuration, this requires multiple lower adjustments so that both sides of the ladder in the step-ladder configuration can be adjusted. [0035] In an exemplary approach described herein, a ladder such as a multi-position ladder pursuant the present disclosure, may include one or more mechanisms to facilitate more easy and convenient adjustment of the ladder. For example, one such ladder includes one or more remote Attorney Docket: 21601-158719-WO actuation levers mounted on a higher rung, such as the top rung of the inner ladder section. The remote actuation lever(s) when actuated causes one or more bolts mounted on the lowest rung of the inner ladder to be retracted. [0036] In one configuration, the remote actuation lever, when at rest or in the first position, includes the bolts extended to lock the outer section relative to the inner section. Conversely, when the lever has been raised/rotated to an actuated or second position and the bolts have been retracted to unlock the outer section from the inner section so the inner section can be raised relative to the outer section to a desired position. [0037] In one exemplary configuration, by raising the remote actuation lever, the user causes a corresponding raise in an associated cam which in turn causes the cross pin and bolt to move toward the ladder centerline. In such a configuration, as the cam rises, the cross-pin moves along the curved slot with the curved slot effectively pushing against the pin in an inwards direction, thus forcing the bolt inwards and out of the hole of the outer section, so the inner section is free to move relative to the outer section. There are typically holes spaced out along the outer rails, so the bolt is able to slide back into a desired hole at a desired height and thus lock the inner section with the outer section. [0038] In some embodiments, the locking mechanism may include a shaft and crank are attached to the remote actuation lever. A rod, which in some embodiments may be mostly contained within the hollow ladder rail, engages the crank at its upper end. The lower end of the rod connects to the cam. Thus, lifting the remote actuation lever causes the cam to rise and the bolts to be retracted. Though not shown, a compression spring typically bears against an end of the bolt to bias the bolt toward the extended position. [0039] In some embodiments, a multi-position ladder with remote actuation capabilities includes one or more pinch levers mounted in the upper rung that are connected to a cable and sheath. The cable and sheath extend through the rung and are connected to the lock bolts. In some configurations, the rung is at least substantially hollow. Thus, when the levers are pinched together the lock bolts are retracted. In some approaches, the levers may be offset from each other, so when the pinch lever on the left, which is attached to the cable, moves to the right, the cable moves to the right, causing the other end of the cable attached to the right lock bolt below, to move to the left and inwards out of the hole in the outer rail. Further, the pinch lever on the right is positioned Attorney Docket: 21601-158719-WO behind the pinch lever on the left, and is attached to the sheath. When the right pinch lever moves to the left, it causes the top of the sheath to move left and the other end of the sheath below attached to the left lock bolt, to move to the right and inwards out of the hole of the other outer rail. [0040] In further embodiments, a handle may be disposed in the upper rung which is pressed upward to actuate. In such a configuration, a gap is typically disposed between the handle and the upper rung to allow the handle to move upwards. Straps with cams at the lower ends are connected to the handle and to cross pins extending out of the bolt on each side of the bolt. The cams fit onto the cross pins on each side radially of the bolt. When the cams rise, the bolts are retracted by means of the cross pins on the bolts. Springs on the handle and bolts bias the bolts toward the extended position. [0041] In another embodiment, the pinch levers are connected to cams by way of cables, and pinching the levers cause the bolts coupled thereto to retract. Further, the cams are configured to extend outwards from and alongside of the bolt. By some approaches, a wedge is attached to the end of each cable, so when the wedge with the slope moves up as the pinch levers being squeezed together, the wedge with the slope pushes against the cam that is extending from the side of the bolt, and the bolt is moved inwards out of the hole in the outer rail. Further, in such configurations, there are springs to bias the bolts toward the extended position. [0042] Some embodiments may include cables which cause the bolts to rotate about their long axes. In one illustrative approach, helical surfaces on the bolts cause the bolts to retract when they rotate, effectively translating a vertical force into a linear force. Further, the cable may be wrapped around the bolt and when the pinch lever is moved to the right, the cable causes the bolt to spin as the cable unwinds. Further in such a configuration, the spring biases the bolt to the extended position, causing the cable to rewind around the bolt when the pinch lever is released. [0043] Referring to FIG. 2, an illustrative multi-position ladder 100 is shown having a first portion 114 and second portion 116 moveable relative to one another via the top 101, and more specifically, a hinge 118 and hinge lock 119. The multi-position ladder 100 includes the first portion 114 with an outer section 102 and an inner section 106. The outer section 102 includes a first outer rail 103 and a second outer rail 104. The first outer rail 103 and the second outer rail 104 are connected via a plurality of outer rungs 105. The inner section 106 includes a first inner rail 107 and a second inner rail 108. The first inner rail 107 and the second inner rail 108 are Attorney Docket: 21601-158719-WO connected via a plurality of inner rungs 109. The second portion 116, similar to the first portion 114, includes a first and second inner rail, a first and second outer rail, a plurality of inner and outer rungs connecting the respective rails. [0044] The first portion 114 and the second portion 116 are connected via the top 101. The top 101 includes the hinge 118 which permits movement of the first portion 114 and the second portion 116 separately or together. The hinge 118 includes the hinge lock 119. The hinge lock 119 may be, for example, pinch locks, which when actuated, allow for one or both of the first portion 114 and second portion 116 to move. In this way, the multi-position ladder 100 is able to be reconfigured from a step-ladder configuration, as shown in FIG. 2, to a linear or extension configuration. In the linear or extension configuration, one of the portions would be rotated about the hinge 118 to be substantially in line with the other portion. [0045] In one aspect, the outer section 102 and the inner section 106 are slidably engageable with one another when the sections are not locked relative to one another. In some embodiments, the inner section 106 is nested inside the outer section 102 or a portion thereof. In this way, the plurality of outer rungs 105 and the plurality of inner rungs 109 are configured to slide past each other when the sections are unlocked form one another. [0046] The multi-position ladder 100 further includes a locking mechanism 110. The locking mechanism includes and is actuated or adjusted via y a graspable handle or actuation member 112 that is manually manipulable. In some embodiments, the actuation member 112 includes a lever, as shown in FIG.2, whereas other options include press or pinch mechanisms among many others. To permit movement between the inner section 106 from the outer section 102, the locking mechanism 110 is unlocked. To unlock the locking mechanism 110 the actuation member 112 much be actuated, lifted and/or adjusted. In this instance, to manipulate the actuation member 112, a user rotates or lifts the actuation member 112 in a vertical direction. In some configurations, the actuation member 112 is rotated such that a distal end of the member is lifted above the associated shaft. In doing so, a bolt 120, disposed inside of one of the plurality of inner rungs 109, is retracted from its opening, thereby permitting relative movement between the inner section 106 and the outer section 102. [0047] Referring to FIG.3, the locking mechanism 110 is shown. The locking mechanism 110 includes the actuation member 112 discussed above. As shown, the actuation member 112 is Attorney Docket: 21601-158719-WO coupled to a shaft 138 which extends the full length of one of the plurality of inner rungs 109 and into the first inner rail 107 and the second inner rail 108. For simplicity, the locking mechanism 110 is illustrated as being disposed on, in, and through one of the inner rails, however, the disclosure contemplates the locking mechanism 110 being disposed on, in, and through one or both of the inner rails. Further, more than one locking mechanism 110 may be employed with a ladder. [0048] By some approaches, the shaft 138 includes a connecting member or crank 140 disposed at each end of the shaft 138. The crank 140 typically includes an opening 142 with a rod 148 is disposed within opening 142 of the crank 140. The rod 148 is typically disposed inside of, within, and/or through a portion of the inner rails. At the other end of the rod 148, the locking mechanism 110 includes a lug 128 coupled to a connecting piece 126 and to a cam 122. In some examples the connecting piece 126 may be a part of the rod 148. In some embodiments, the connecting piece 126 may be a piece connecting the rod 148 to the lug 128. [0049] To unlock the inner section 106 from the outer section 102, the actuation member 112 is lifted. This in turn rotates the shaft 138 which rotates the crank 140 and the opening 142. This rotation of the opening 142 lifts the rod 148 up. In lifting the rod 148, the lug 128 and connecting piece 126 are lifted which in turn lifts the pin housing or cam 122. The cam 122 includes a curved portion such as a curved opening 130. The curved opening 130 is curved such that when lifted, the bolt 120 is retracted. To do so, the bolt 120 includes a cross pin 124 coupled to, such as by being disposed within the bolt 120. The cross pin 124 also has a portion disposed within the curved opening 130. Because the curved opening 130 includes a horizontal component in the curve, as the cam 122 is pulled upward, the cross pin 124 traverses the curved opening 130 and is pulled inward by the horizontal component of the curved opening 130 retracting the bolt 120. [0050] Referring to FIG. 4A and 4B, the inner section 106 is shown in a locked state which would prevent movement of the inner section 106 relative to the outer section 102. The locked state includes the bolt 120 extending beyond an edge of the inner section 106. As outlined above, to move the bolt 120, the actuation member 112 is raised. A spring 125, shown in FIGS.9A to 9C, may be disposed between each bolt 120 and provide an outward force on the bolt 120 to aid in maintaining the locked state. The spring 125 may be coupled to the inner end of each bolt 120. Attorney Docket: 21601-158719-WO [0051] Referring to FIG.5A and 5B, the inner section 106 is shown in an unlocked state which permits movement of the inner section 106 relative to the outer section 102. The unlocked state includes the bolts 120 being retracted into the first inner rail 107 and the second inner rail 108. The bolt 120 is retracted into an opening 134 in the first inner rail 107. The cam 122 and the cross pin 124 may interact with a housing 132 attached to one of the plurality of inner rungs 109. For instance, when the cross pin 124 is moved to the unlocked state, the cross pin 124 fits into the housing 132. [0052] In some embodiments, the one of the plurality of inner rungs 109 the bolt 120 is disposed within is the first, or lowest inner rung. This first inner rung may be at a first distance from the bottom, or the end, of the inner section 106. The actuation member 112 may be disposed remotely from the first inner rung, at a second distance, where the second distance is greater than the first distance. In this way, the inner section 106 may be unlocked from the outer section 102 at a distance above the ground, higher than the known multi-position-type ladder 10 having the pinch lock 12 disposed on the first inner rung. This allows for the unlocking of the multi-position ladder 100 at a more convenient or comfortable height. This further allows for a user to unlock the multi- position ladder 100 and extend the sections relative to one another while remaining in a substantially standing position. This is opposed to the known multi-position-type ladder 10 where a user may be required to use the pinch lock 12 to unlock the known multi-position-type ladder 10 and then, while keeping the pinch lock 12 retracted start extending the sections while still in a bent over or crouched position. [0053] In some embodiments, the angle of the crank 140 and length of the opening 142 of the crank relative to the actuation member 112 may be changed to change the amount of movement required to actuate the actuation member 112. Further, the shape of the curved opening 130 in the cam 122 can be modified to change the movement of the cross pin 124 disposed therein. The cross pin 124 may be push fit into the bolt 120. Additionally or alternatively, the cross pin 124 may include a protrusion at one end to stop the cross pin 124 from being moved out of the bolt 120. Further, an opening and cotter pin of sorts could be used on one or both ends of the cross pin 124 to similarly stop the cross pin 124 from being moved out of the bolt 120. [0054] As can be seen in FIG. 4B, the bolt 120 extends beyond the first inner rail 107. The bolt 120 extends into a corresponding opening in the first outer rail 103. In this way, the bolt 120 Attorney Docket: 21601-158719-WO obstructs the first outer rail 103 from moving relative to the first inner rail 107 due to the bolt 120 holding against the sheer force placed onto the bolt 120. [0055] Referring to FIGS. 6A to 6C, the locking mechanism 110 in the unlocked state is illustrated. There is an opening 146 at the second distance in the first inner rail 107 to permit the vertical movement of the rod 148 created by the movement of the actuation member 112. Similarly, there is another opening 150 at the first distance in the first inner rail 107 to permit the vertical movement of the rod 148 created by the movement of the actuation member 112. [0056] Referring to FIG.7, an embodiment of the locking mechanism 110 is illustrated. In this embodiment, the actuation member 112 may be, for example, pinch locks 160 which are disposed above the first inner rung of the inner section 106. One of the pinch locks is connected to a cable 162. The other pinch lock is connected to a sheath 164 surrounding the cable. Similarly, one of the two bolts 120 is connected to the cable 162 on one end via a lug 166, and the other of the two bolts 120 is connected to the sheath 164 at the other end via a lug 166. By actuating the pinch locks 160, pulling them inward towards one another, as shown by the arrows in FIG. 7, the left pinch locks pushes the cable 162 in the same direction the left pinch lock is being actuated in. Similarly, the right pinch lock 160 pushes the sheath 164 in the same direction the right pinch lock is being actuated in. The cable 162 and sheath 164 are routed down one of the inner rails and are coupled to the bolts 120. By pushing the sheath 164 and cable 162, both bolts 120 are pulled inward and to the unlocked state. This, as stated above, permits movement between the inner section 106 and the outer section 102. [0057] Referring to FIG.8, a further embodiment of the locking mechanism 110 is illustrated. In this embodiment, the actuation member 112 may be, for example, a handle 170 which is disposed above the first inner rung of the inner section 106. The handle 170 is connected to a strap 172 on each end. The strap 172 is disposed within the first inner rail 107 and the second inner rail 108 and traverses down towards the lowest inner rung. The locking mechanism 110 illustrated utilizes the cam 122 and the cross pin 124 described above. The upward movement on the handle 170 pulls the strap 172 up which in turn pulls the cam 122 upward. The curved opening 130 forces the cam 122 inward along the curve and retracts the bolts 120, permitting the inner section 106 and the outer section 102 to move relative to one another. Attorney Docket: 21601-158719-WO [0058] Referring to FIGS. 9A to 9C, a further embodiment of the locking mechanism 110 is illustrated. In this embodiment, the actuation member 112 may be any of the above discussed actuation members. A cable 180 is utilized and is disposed within the first inner rail 107 and the second inner rail 108. By actuating the actuation member 112 the cable 180 is pulled upward. In doing so, the cable 180 pulls a wedge 182 upward. The wedge 182 is shaped in such a way that the upward movement forces the cross pin 124 inward, similar to the curved opening 130 of the cam 122. The wedge 182 may be disposed on one side of the bolt 120, the middle of the bolt 120, or on both sides of the bolt 120. Further, the wedge 182 may be surrounded by a housing 184 to aid in controlling the movement of the wedge 182 in the upward direction maintaining contact with the cross pin 124. The spring 125 is shown attached to the inner end of the bolt 120 which, as described above, aids in maintaining the locked state. [0059] Referring to FIG. 10A and 10B, a further embodiment of the locking mechanism 110 is illustrated. In this embodiment, the actuation member 112 may be, for example, pinch locks 190 which are disposed above the first inner rung of the inner section 106. Each of the pinch locks is connected to a cable 194 via a lug 192. The cable 194 is disposed within the first inner rail 107 and the second inner rail 108 and is coupled to and wound around the bolt 120 at the other end. By actuating the actuation member 112 the cable 194 is pulled upward. In doing so, the cable 194 rotates the bolt 120 as cable 194 unwinds from the bolt 120. The bolt 120 includes threads 196 which engage mating threads coupled to the first inner rung. As the bolt 120 rotates it is constrained to translate linearly along its axis because of the thread engagement. Similar to the above, the spring 125 may be utilized to aid in maintaining the locked state of the locking mechanism 110. [0060] While the example ladders illustrated herein include a multi-purpose ladder with various locking mechanism, other ladder types such as, e.g., extension ladders, also may have one or more locking mechanisms incorporated therein. [0061] Those skilled in the art will recognize that a wide variety of modifications, alterations, and combinations can be made with respect to the above-described embodiments without departing from the scope of the disclosure, and that such modifications, alterations, and combinations are to be viewed as being within the ambit of the disclosed concept.