An apartment staircase automatic lift, comprising a combined structure of a carrying guiding-rail, a transmission-set main-body and a driving module; wherein the transmission-set main-body is set with a carrying wheel-seat and a transmission-set carrying-shelf; wherein the transmission-set carrying-shelf is set with a foot-pedal; when a person stands on the foot-pedal, the driving module can be controlled to drive the transmission-set main-body and the foot-pedal to move back and forth along the carrying guiding-rail between the upper and lower ends of the carrying guiding-rail; thereby helping the person to go up and down the staircase. The overall structure has the advantages of low cost, easy installation and operation, and compact structure; which can improve the defects of the conventional staircase-lift seat including the large volume size, occupying large staircase space, and being inconvenient to be arranged in a general apartment staircase.

A stair lift eliminates a hindrance to the normal use of a staircase. The stair lift comprises two rails disposed along the staircase in parallel to the width of the staircase, a self-propelled gantry-shape carriage having a gantry-shaped structure, traveling on the rails with a restriction to prevent a derailment, and a lift step (1) disposed between left and right leg structures of the gantry-shape carriage and supported by a lifting mechanism provided in the leg structure. When the gantry-shape carriage stands by at a lower floor or a upper floor of the staircase, the lift step (1) lands on the floor adjacent to the staircase or a step of the staircase, and when the gantry-shape carriage travels on the rails, the lift step is held at a position preventing an interference with steps of the staircase. A user gets on the lift step (1) while standing.

The invention relates to a telescopic staircase to be installed on construction sites for providing a safe staircase for workers during building construction. The telescopic staircase comprising at least one lateral guard comprising a top rail, a bottom rail and at least two newels, the bottom rail having a plurality of connecting holes, and a plurality of tread assembly comprising a tread plate, at least two stringer portions and at least two pairs of support members, each support member having at least one connecting hole, in which the at least one lateral guard includes a first portion being retractable into and extensible from a second portion, in which each support member substantially forms a 45 angle with the tread plate, and in which the support members are to be attached to the top surface of the bottom rail via attachment means through the connecting holes.

A tubular construction element and a method for forming a tubular construction element built of longitudinally extending segments in which the segments are joined together in a side-by-side relationship and in which the longitudinal direction of the tubular construction element being greater than the diameter thereof.

A stairlift for moving along a staircase having: a curved rail having a centre line, a load bearing surface, and a carriage including a first and a second guiding unit connected to each other by a connecting unit. The second guiding unit is connected to the connecting unit via a third rotation joint about a third axis and a fourth joint about a fourth axis, the connection unit includes a fifth rotation joint about a fifth axis. The fifth axis extending from outside the rail to an area close to or on the centre line of the rail in a first plane close to or on the third and the fourth axis.

A stairlift rail is configured to cause a stairlift carriage and chair to rotate a small amount in a downhill direction adjacent to the lower end of the rail, thus avoiding a clash between the chair and the staircase.

A stair lift device laid upon a staircase can support upward and downward movement of a platform of the device along stairs of the staircase. The device has two side supports in at least partial contact with the stairs of the staircase for supporting movement of the platform, and each side support can include a rail of the device along which the platform moves.

A personal stair lift device transports a handicapped or immobile individual of higher than average weight capacity up and down a stairway on a chair assembly supported on a dual rail mount assembly. The stair lift device is used on a stairway on a dual track system aligned on both sides of the stairwell, connected to dual metal pipes, and is further connected to a plurality of metal brackets, containing steel braided cables. Braided cables are connected to guide wheels that can lift heavier weight capacity individuals.

A method for forming a tubular construction element built up of longitudinally extending segments joined together in a side-by-side relationship, wherein the length in the longitudinal direction of the tubular construction element is greater than the diameter thereof.

A method of planning a platform lift, in particular a stairlift, at a stair, the platform lift including a rail, a platform, in particular a chair, a drive unit for driving the platform along the rail, wherein the platform is attached to the drive unit. The method includes acquiring 3D stair data of a stair on which the platform lift is to be installed; calculating based on the acquired 3D stair data a path of travel of the rail, and by retrieving manufacturing constraints, in particular from a database, calculating a feasible path of travel under consideration of the retrieved manufacturing constraints.