An assembled ladder includes two supporting leg assemblies, at least one rung and a bridging part, wherein each supporting leg assembly of the two supporting leg assemblies includes a front supporting leg and a rear supporting leg rotatably connected to the front supporting leg, and the at least one rung and the bridging part are detachably connected between the two supporting leg assemblies. During logistics transportation, the at least one rung is detached from the two supporting leg assemblies, the bridging part is also detached from the two supporting leg assemblies, and the two supporting leg assemblies are stacked. In use, two ends of the bridging part are fixedly connected to the two supporting leg assemblies, and two ends of the at least one rung are also fixedly connected to the two supporting leg assemblies.

A telescopically extendable and collapsible ladder assembly includes multiple collapsible ladder sections provided with an air damper at the bottom end of tubular stile members. The air dampers provide retardation of gravity induced velocity of the collapsible ladder sections upon collapse of the ladder sections. Multiple air dampers include a throttle valve securing device, for cooperating with a throttle valve of the air damper when the collapsible ladder section is in the collapsed position, to secure the throttle valve in its throttle position and/or an obturator device. The obturator device includes a first obturator member and a second obturator member where the first obturator member and the second obturator member are configured to, when the collapsible ladder section is in the collapsed position, in combination provide additional throttling.

A stair assembly may include a plurality of steps, a main stringer pivotably connected to a corresponding lateral end of each of the plurality of steps, and a support stringer pivotably connected to a corresponding lateral end of each of the plurality of steps, wherein the main stringer and the support stringer are movably connected to the plurality of steps such that the rise and the run of the plurality of steps remains consistent when the main stringer and the support stringer are moved relative to each other.

A safety ladder for a pool includes a movable ladder portion that can be moved between an accessible position and an inaccessible position. The movable ladder portion is disposed substantially outside of the pool and provides a series of steps that can be climbed vertically for entry into the pool when it is located in the accessible position. In the inaccessible position, the movable ladder portion is moved such that the steps can no longer be climbed and access to the pool is prevented. Such safety ladder assemblies are provided primarily to prevent children and other at risk individuals from entering an unattended pool. A dampening member is provided such that the force necessary to move the movable ladder portion is regulated to prevent a dangerous accumulation of moment and limit a risk of injury through harmful contact therewith.

A ladder and a multipurpose ladder whose rungs and rails are made out of 7000 series aluminum alloy and which has a duty rating of at least 250 lbs. A method for producing a ladder. A method for using a ladder.

An intermediate rung apparatus for use with a ladder includes a first hook, legs, and an intermediate rung. The first hook is configured to extend over a rung of the ladder and couple the intermediate rung apparatus to the ladder. The intermediate rung apparatus also includes legs extending from the first hook. The legs are configured to extend in a downward direction substantially parallel to vertical supports of the ladder when the intermediate rung apparatus is coupled to the ladder. The intermediate rung apparatus further includes an intermediate rung connected to the legs and configured to extend in a direction substantially parallel to the rung of the ladder when the intermediate rung apparatus is coupled to the ladder. In some embodiments, a mount may be used to support the intermediate rung apparatus and/or the ladder.

A vertical ladder has two side stiles and at least one front vertical rail. Two sets of half treads are supported by each stile and horizontal rung members connected between at least one rail and a respective half tread or stile. Each horizontal rung member only has a front straight bar portion that terminates orthogonally at the at least one rail (i.e. at a T-junction), thereby allowing a vertical grab rail portion for gripping (including for counterbalance) and an orthogonal side straight bar portion. The rung members and half treads are alternately vertically staggered. As such, a user may ascend the ladder by stepping sideways onto the inward facing half treads and shift the user's weight from side to side, thereby being able to climb the ladder even without holding on and, when holding on, the vertical grab rail portions may be used for counterbalance.

A ladder includes a pair of generally curved side rails arranged in a spaced apart manner, a plurality of fixed rungs disposed between the side rails, a plurality of pairs of rung supports, and a plurality of hinged rungs. Each of the pairs of rung supports is horizontally aligned with each other and disposed on respective inner sides of the side rails. The rung supports are spaced apart from the fixed rungs along lengths of the side rails. Each rung support includes a flanged end portion having an aperture therein. Each hinged rung is associated with a respective pair of rung supports. Each hinged rung has a first end pivotally coupled to the flanged end portion of a first rung support in the respective pair of rung supports such that each hinged rung is pivotal between a secured position between the rung supports and a retracted position.

A stretchable ladder, having inner leg bar and outer leg bar, the side edge of the outer leg bar forming an opening. The outer leg bar is sleeved on the inner leg bar, with the inner leg bar and the outer leg bar being relatively slidable. The ladder has a lock structure for locking the inner leg bar and for preventing the inner leg bar from separating from the outer leg bar. The lock structure is disposed at the outer leg bar, and is hookable to the inner leg bar, so as to make the inner leg bar embedded in the outer leg bar.

A ladder having a first rail and a second rail. The ladder having a standard rung having a width permanently attached to the first rail and the second rail. The ladder having a first wide rung having a width greater than the width of the standard rung, which is permanently attached to the first rail and the second rail. The ladder having a second wide rung having a width greater than the width of the standard rung which is permanently attached to the first rail and the second rail. The first wide rung, and the second wide rung are disposed in a work zone of the ladder. The work zone of the ladder is where a user typically stands on the ladder while performing tasks. The standard rung is disposed outside the work zone. A wide rung. A method for using a ladder. A method for producing a ladder.