A stair assembly includes at least one joist comprising an upper wall, a first lateral wall extending from the upper wall, and a second lateral wall extending from the upper wall. At least one stair step support bracket includes a tray support wall, a first side wall extending from the tray support wall, and a second side wall extending from the tray support wall. The first and second side walls define a pair of first front aligned positioning holes configured to receive a first set pin and a pair of first rear aligned positioning holes configured to receive a second set pin. The pairs of first front and rear aligned positioning holes disposed such that when the first and second set pins received therethrough contact the upper wall of the at least one joist, the tray support wall is positioned at a first rise dimension.

A splicing step device includes a first step body and a second step body. A height of the first step body is different from a height of the second step body, and the first step body is configured by splicing. The splicing step device is detachable, which reduces a space occupied by the splicing step device during storage and transportation, and reduces storage costs as well as transportation costs.

A staircase kit, device, and method that uses precut, fixed-sized components capable of producing building code-compliant staircases that can accommodate foot or more differences in home story heights. The design uses fixed-length stringers and adjustable height risers. The angle between the stringers to the floor changes depending on the height of the adjustable height risers and story height. The angles of the steps, stringers and banisters/handrails are configured to adjust with respect to the other components with the aid of turnbuckles and movable joints or bolts, thus keeping the steps and landings level at different story heights. This enables homeowners, generally exempt from contractor license requirements, to use a prefabricated kit to build code-compliant stairways in their homes with little or no staircase cutting or part modification.

A modular adjustable stairway that is comprised of two or more stair segments and that may be configured to have various slopes depending on the desired location of installation.

A ladder having platform steps, the ladder being convertible between a deployed position for supporting a person or other load, to a storage, scaffold, or ramp position in which the steps lie in a generally planar arrangement. When deployed, the ladder steps remain parallel to each other and form a series of parallelograms with the rails of the ladder. The ladder is also capable of being locked or secured at various angles of deployment. The ladder further includes receivers to selectively receive accessories such as wheels, hooks, handles, or pads. The addition of accessories such as wheels allows the ladder in the storage position to be used as a creeper, dolly, or cart.

A staircase kit, device, and method that uses precut, fixed-sized components capable of producing building code-compliant staircases that can accommodate foot or more differences in home story heights. The design uses fixed-length stringers and adjustable height risers. The angle between the stringers to the floor changes depending on the height of the adjustable height risers and story height. The angles of the steps, stringers and banisters/handrails are configured to adjust with respect to the other components with the aid of turnbuckles and movable joints or bolts, thus keeping the steps and landings level at different story heights. This enables homeowners, generally exempt from contractor license requirements, to use a prefabricated kit to build code-compliant stairways in their homes with little or no staircase cutting or part modification.

An adjustable staircase includes an upper stair, a lower stair, a first bar and a second bar. The vertical distance between the upper stair and the lower stair is adjustable. Also, each bar is coupled to each of the upper and lower stairs, and the first bar is configured to function as a guard. As a result, the first bar blocks a pinch point between the first and second bars.

The invention relates to a lifting system (1) for a stairway, wherein said lifting system can take at least two positions: a stairway position and a platform lift position. The lifting system is provided with a rotatable ramp (9) for enabling a walking-impaired person to enter or exit the lifting system, when the lifting system is in a platform lift position, said ramp being rotatable mounted along at least a part of an outermost edge of the step (2, 3). Furthermore, the invention relates to a method of operating a lifting system, wherein the operation transforms the lifting system from a stairway position to a platform lift position to enabling a walking-impaired person and/or an aid for a walking-impaired person to get from a lower level to an upper level or to get from an upper level to a lower level. Moreover, the invention relates to a computer program.

An adjustable stair tray assembly includes a first angle bar, a plurality of track channels coupled to the first angle bar with each defining a cavity. A plurality of U-channels is coupled to a second angle bar, and each one of the plurality of U-channels is received in a respective cavity of each of the plurality of track channels. The second angle bar comprises a horizontal wall, a vertical wall extending from the horizontal wall, and a reinforcing flange extending downwardly from the vertical wall. A plurality of U-channels is coupled to the second angle bar, the plurality of U-channels is telescopically adjustable within the plurality of track channels to adjust a tray depth of the adjustable stair tray assembly.

An adjustable stair tray assembly includes a first angle bar, a plurality of track channels coupled to the first angle bar with each defining a cavity. A plurality of U-channels is coupled to a second angle bar, and each one of the plurality of U-channels is received in a respective cavity of each of the plurality of track channels. The second angle bar comprises a horizontal wall, a vertical wall extending from the horizontal wall, and a reinforcing flange extending downwardly from the vertical wall. A plurality of U-channels is coupled to the second angle bar, the plurality of U-channels is telescopically adjustable within the plurality of track channels to adjust a tray depth of the adjustable stair tray assembly.