A freestanding, adjustable, modular spiral staircase embodied in a unique method of spiral staircase design is provided. The steps of the spiral staircase are arrayed and supported in a circular pattern around a central column with the outside edges or leading or trailing corners of the steps are supported by three peripheral columns, while step posts interconnect adjacent steps. Many parts are interchangeable and the steps adjustable to allow for shortening or lengthening the staircase. The base of the staircase unit is heavy to provide maximum stability and to prevent tipping.

A kit of parts for securing a plurality of fixtures to an elongate support member is described. The kit of parts comprises a plurality of attachment members. Each attachment member comprises an aperture for receiving the elongate support member and a fixing detail adapted to attach a fixture to the attachment member. The aperture is larger than a lateral dimension of the elongate support member to provide a gap between the attachment member and elongate support member when received in the aperture. The kit of parts also comprises a plurality of locking elements. Each locking element is adapted to be received in the aperture in the gap between the attachment member and the elongate support member to secure the attachment member to the elongate support member by friction. Further, each attachment member is adapted to engage an adjacent attachment member when secured to the elongate support member by at least one said locking element to form a hollow column secured around the elongate support member for supporting a plurality of fixtures.

A stairway column with an integral ventilation duct. The present system includes a housing having sidewalls forming an interior volume with an open upper end. An opening is positioned along one of the sidewalls, where a plurality of stairs begin, leading from a bottom of the housing to the open upper end. A ventilation duct is placed within the interior volume of the housing beneath the stairs, extending from an intake aperture positioned at the bottom of the housing to an outlet aperture disposed at the open upper end. A fan may be installed within the ventilation duct for carrying air from the intake to the output. Additionally, one or more of the stairs may include drawers installed within the riser of the stair. In some embodiments, shelves and cavities for appliances are formed within one or more of the sidewalls, offering economical storage without requiring additional space.

Apparatus for modular steps to retrofit existing staircases are provided. The sections of steps may be connected to each other to fit existing staircases of varying lengths. The sections of steps have shorter treads and risers than the staircases on which they are retrofit, allowing smaller pets and pets for whom mobility is a challenge, to more easily traverse a staircase, and without mechanical or human assistance. The sections of steps may be attached to the framing or finish of the existing staircase.

A movable and reconfigurable staircase. The stairs can be configured as a straight stair, a circular stair, or a combination stair. The stairs can be placed in a stored configuration as well.

A freestanding, adjustable, modular spiral staircase embodied in a unique method of spiral staircase design is provided. The steps of the spiral staircase are arrayed and supported in a circular pattern around a central column with the outside edges or leading or trailing corners of the steps are supported by three peripheral columns, while step posts interconnect adjacent steps. Many parts are interchangeable and the steps adjustable to allow for shortening or lengthening the staircase. The base of the staircase unit is heavy to provide maximum stability and to prevent tipping.

A freestanding, adjustable, modular spiral staircase embodied in a unique method of spiral staircase design is provided. The steps of the spiral staircase are arrayed and supported in a circular pattern around a central column with the outside edges or leading or trailing corners of the steps are supported by three peripheral columns, while step posts interconnect adjacent steps. Many parts are interchangeable and the steps adjustable to allow for shortening or lengthening the staircase. The base of the staircase unit is heavy to provide maximum stability and to prevent tipping.

An adjustable step system for assisting a person walking up or down a flight of stairs. The system includes adjustable steps that can be mounted to the stairs of the flight of stairs. The adjustable steps effectively reduce the required vertical height of a step that a person is required to take for each stair. The adjustable steps are also movable and can be positioned at a desired location along the width of the stairs when not in use.

A hydraulic elevating platform having no guide rails and an elevating method. A hydraulic power pack drives three parallel hydraulic cylinders to work synchronously, thereby implementing the rising and falling of an elevating platform; when the elevating platform reaches a predetermined floor, an upper electric pushrod pushes a pedal assembly out, and then the pedal assembly drives a pedal to rise by means of a pedal elevating system until the pedal is flush with the surface of a loading table of the elevating platform; outward-swinging doors between the elevating platform and a floor open to form pedal guardrails; then sliding doors open and a man can step onto a stair via the pedal assembly. An eccentric loading adjusting means eliminates eccentric loading to achieve balance about the center of gravity, thereby eliminating the eccentric loading of the platform. The elevating platform is simple in structure, safe, reliable, and easy to maintain. The elevating platform, placed within a spiral stair, is convenient for movement of crowds and cargo delivery at certain scenarios and is widely applicable. The elevating method is simple to implement and effectively solves the eccentric loading problem caused by reasons such as outstretching of a pedal of a hydraulic elevating platform and uneven distribution of people on the elevating platform, so that the hydraulic elevating platform is more stable and reliable during operation.

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.